Opal rings from official Government Heritage site in Australia.

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Opal Natural Gemstones Pricing Guide.

Posted by opals on Jan 19, 2018 in about opals, How to price opals, opal ring |

Opal Natural Australian Opal Gemstone Educational Article, Opal Pricing Guide. Opal natural in rings and all opal jewellery from Graham Black is fully guarantee, with money back policy if opal does not fit the description. Policy 30 days only return policy you must pay for postage to Australia and be responsible for the opal until it reaches us. The opal sent back to us in the same condition as receive it in, and return the same opal back to Australia described for each individual jewellery item or gemstone. Opals from Graham Black Opal specialist personal guarantee, 3 mile Heritage opal mine’s are recognised as having the finest quality, and most amazing opal ever discovered. Graham Black fully guarantees this is a natural Australian, black opal with no treatment of any kind, N1 bodytone with good play of colour. Graham also agrees totally with the lab testing certificate that this is a solid black stone, and all measurements size description ^ weight is correct. Opal Natural Educational Article How To Prices Opals On Brightness. Here Is Two Very Good Examples Opals To Compare For Brightness Play Of Colour Or Fire For Jeweller’s and Goldsmith’s. The gemstone for sale is a on special to promote our business, amazing very good price because you can compare gemstones for yourself, the opal gemstone in the ring does not have as bright play of colour and is very much more expensive then the stone here for sale. Simply because the opal in the ring has only a semi-black opal set into the design. The opal on special is brighter because it has a 100% black bodytone N1 grouping the best. This certificate is for insurance replacement purposes also, certificate showing the value of the opal ring if lost and need to be replaced by your insurance company, where lab testing certificates do not show the retail value, only provides size description cts and stating natural or treated gemstone. More information about opal rings jewellery from Graham and his official Government state Heritage opal mine, from 3 mile rd in NSW and the capital of this state is Sydney Australia This opal natural no treatment of any kind and is much more expensive with similar brightness in full sun light, as the gemstone for sale about, and this opal with insurance replacement valuation is a little bit more brighter without light, then the opal for sale above. A great example because the black opal red multi colour has a certificate for insurance purposes, professional valuation replacement certificate showing the value of the opal if damage stolen or lost and need to be replaced by your insurance people. There are many factors to valuing natural opal gemstones and many crystals and white opals along with semi-black can be brighter, have more fire then some natural black that only have very...

Posted by opals on Nov 21, 2016 in about opals, Australian opal diamond ring, Australian opal jewelry, Australian opal ring, Australian-opal-gemstone-rings, Black opal jewellery, Black opal jewelry, Black opal rings, Care for opal jewelry, Custom opal diamond ring, fire opal jewelry, Handmade opal jewelry, How to price opals, Jewelry October, Opal engagement rings, opal jewellery, Opal jewelry, opal ring, opal ring, opal ring handmade, Opal ring, Articles Jewelry., selling opal jewelry |

Opal ring handcrafted by Graham Black. Opal ring handcrafted lot cheaper hear because you have gone direct to the primary producer goldsmith designer that open cut his own Australian opal mine. Here you are going direct wholesale prices to Mr Graham Black site and shopping cart, with the best deposit of Australian opals ever discovered from the only official government Heritage listed opal mine in the country of Australia, Heritage listed because the quality is the best deposit of opal gemstones ever discovered anywhere in the world. Opal ring handcrafted and engagement opal rings must be custom made, this type of jewelry business must be taken serious, because custom work is not cheap and can cost you up to $900 if not more just on the crafted Goldsmith work and design. Engagement weddings and special presents the most serious gifts of all the gifts in your life, you must consider choices of jewelry and rings for your engagement, opal is a very special gemstone for your wife’s engagement, opal this is an excellent gemstone choice for jewelry. Opal ring handcrafted big sale on now one free Goldsmith handmade engagement opal ring, clients only need to purchased one opal over $199 and this will entitle you to one basic handmade design free, if you need extremely detailed Goldsmith work clients will have to pay a very small fee, little charge under hundred dollars when it comes to very detail engagement handcrafted rings, clients must pay for the gold or silver, and graham will take care of the mail delivery and insurance charges to your premises. Opal Rings , Video More Opal Design Choice. Opal Diamond Ring , Video More Opal Design Choice. Opal Gold Ring , Video More Opal Design Choice.. Opal Ring , Video More Opal Design Choice.. Black Opal Rings , Video More Opal Design Choice. Black Opal Ring , Video More Opal Design Choice. Save a small fortune in handcrafted workmanship, as when it comes to handmade opal rings, Goldsmiths in your countries can be quite expensive, as the basic wage in first world countries protects everybody gardeners and laborers, everybody has an insurance policy, so handcraft jewelry in America Japan European Union nearly out of the question these days, graham saves his customers a small fortune because when you purchase from his website you are purchasing direct from the miner, you are cutting out the International opal dealers that fly from your country to Australia, Business people pay a lot of money to fly back again, car rental hotels and this is time, all cost passed on to customers. Graham also cuts out the middle business jewelry stores and slick sales people. Opal gemstones have many colors and are sufficient on their own, if you can afford to purchase a few little diamonds that are not expensive, and surround the opal gemstone with some sparkling...

Posted by opals on Oct 29, 2016 in Australian opal diamond ring, Australian opal jewelry, Australian opal ring, Black opal jewellery, Black opal jewelry, Black opal rings, Care for opal jewelry, Custom opal diamond ring, fire opal jewelry, How to price opals, Jewelry October, Opal engagement rings, opal jewellery, Opal jewelry, opal ring, opal ring, opal ring handmade, Opal ring, Articles Jewelry., selling opal jewelry |

Engagement Opal Rings Handcrafted Or Black Opal Rings. Engagement opal rings lot cheaper hear because you have gone direct to the primary producer goldsmith designer that open cut his own Australian opal mine. Here you are going direct wholesale prices to Mr Graham Black site and shopping cart, with the best deposit of Australian opals ever discovered from the only official government Heritage listed opal mine in the country of Australia, Heritage listed because the quality is the best deposit of opal gemstones ever discovered anywhere in the world. Engagement opal rings this is the most precious time of your life, you must consider the choices of jewelry for your wife’s engagement ring, if you would like a very special pretty gemstone to match your future wife, then engagement rings handcrafted opal ring can be a excellent choice. Engagement opal rings Sale free Goldsmith handmade ring if clients purchased one of graham’s opals over $199, but clients will have to be charge a little bit when it comes to very detail engagement handcrafted rings,you only have to pay for the material silver or gold, graham will pay for mail delivery and insurance charges. You do not have to add diamonds because opal gemstones have many colors and are sufficient on their own, but if your budget allows you to purchase little diamonds that are very affordable, and surround the feature gemstone with clear sparkling diamonds, then this will significantly enhance your future wives engagement opal ring. Maybe your budget can only extend to a few small diamonds, they can be inserted into the design saving your budget. Opal Rings , Video More Opal Design Choice. Opal Diamond Ring , Video More Opal Design Choice. Opal Gold Ring , Video More Opal Design Choice.. Opal Ring , Video More Opal Design Choice.. Black Opal Rings , Video More Opal Design Choice. Black Opal Ring , Video More Opal Design Choice. Remember the basic pricing system for this stone is basic body tone structure, along with different prices for different strength play of colors, and cleanness of color or cloudiness. Also you can use other gemstones to insert around the engagement opal ring, like little red ruby’s, will enhance a beautiful blue green opal. Red multicolored blue green opals are very expensive, and by adding little red ruby’s around a beautiful blue green opal you have all these colors at a very affordable price. Little reddish pinkish ruby’s are very affordable so do not let jewelers and Goldsmiths tell you otherwise. And as opals is a very loving gemstone they are perfect for engagement events, maybe just leave the diamonds later on when you finally get married. This way you will have an beautiful contrast on your wife’s hand, one colorful opal engagement ring adding uniqueness to every woman’s fashion statement her outfit on the day, and of course later...

Posted by opals on Sep 12, 2016 in about opals, Australian opal jewelry, Australian opal ring, Black opal jewellery, Black opal jewelry, Black opal rings, Care for opal jewelry, Custom opal diamond ring, fire opal jewelry, Handmade opal jewelry, How to price opals, Jewelry October, Opal engagement rings, opal jewellery, Opal jewelry, opal ring, opal ring, opal ring handmade, Opal ring, Articles Jewelry. |

Handcrafted black opal rings and black opal jewellery direct from official Australian heritage mine. Handcrafted black opal rings lot cheaper hear because you have gone direct to the primary black opal producer and goldsmith designer that open cut his own Australian black opal mine. Here you are going direct wholesale prices to Mr Graham Black site and shopping cart, with the best deposit of Australian black opals ever discovered from the only official government Heritage listed black opal mine in the country of Australia, Heritage listed because the quality is the best deposit of black opal gemstones ever discovered anywhere in the world. Handcrafted black opal rings direct from the primary producer, Graham has the only official Australian State Heritage Opal mine, and does not ask customers for any extra costs postage and insurance, the lowest price for handcrafted Opal rings. Goldsmith Graham will better your jewelers price that they gave you, Graham is often more than 75% cheaper for you need handcrafted black opal rings and jewelry. No expensive retail jewellery shop prices here or salesman you’re going direct to the Goldsmith, and opal mines at wholesale, so cut out all the middle men and women in the jewelry business, and save yourself a small fortune.Great deal customers buy one of Graham’s Opals over $199, all the handcrafted work is free for basic rings and pendants jewelry, customers only have to pay for materials gold or silver, and if you are looking for a very big ring and very detailed ring, maybe with some other added gemstones in the design, there will be a small handcrafted Goldsmith charge. Opals Australian National Women’s basketball team name Opals, Head coach Jan has one Australian black opal from Graham’s famous black opal mine, which is next door to where the famous black opal named Halley’s comet, the Guinness book of world records largest uncut black opal gemstone that was discovered in modern time, and was discovered also in the same year 1986, the year when Halley’s comet could be seen from Earth. About Graham Black Opal official Government Heritage site in Australia more information about black opal rings. The head coach stated Graham’s black opal jewellery will remain Jan’s preferred lucky black opal jewellery to wear with pride . The coach has carried and worn a piece of lucky black opal during all the major campaigns whilst coaching the Australian Basketball team, throughout Jan’s world Championships of 2002, the Athens Olympics of 2004, medal 2006 World Championships and Silver in Beijing Olympics. Handcrafted Opal rings commercial and higher grade must be crafted by opal specialist, Goldsmith jewelers must be particularly familial with the gemstone, particularly the setter must be very familiar with such a rare gemstone. And this can be very costly as many jewellers want the customer to pay extra, for insurance before guaranteeing finished set handcrafted black...

Black Opal Necklace Australian opal Jewelry.

Posted by opals on Aug 21, 2016 in Australian opal jewelry, Australian opal ring, Black opal earrings, Black opal jewellery, Black opal jewelry, Black opal rings, Black opals, Care for opal jewelry, Custom opal diamond ring, Handmade opal jewelry, Handmade opal necklace, How to price opals, Jewelry October, October gemstone, opal jewellery, Opal jewelry, opal ring, opal ring, Opal ring, Articles Jewelry. |

Black opal necklace handmade jewelry. Black opal necklace wholesale prices, you the most affordable custom goldsmith available. Magnificent offer Sale for Customers, simply if you buy one of the opals over $199. Graham will hand make free of charge one custom ring or pendent design jewelry free of charge. Custom made jewelry at the best prices here, Graham has better prices then you will fine any where for handmade opal jewelry. Cut out all the middle people and go direct to the primary producer, Australian opal gemstone specialist in the Industry . Graham the only opal expert with Government official Heritage listed opal mine, because the opal stones are known as the best quality, listed as item of environmental heritage in LEP National Trust of Australia.Graham supplies free certificate the only Heritage opal producer from the Capital of the black opal Industry in the Premier State the Capital Sydney Australia. Black opal necklace. If opal silica spheres arrangement form regular type uniform in or on the black opal material, at the most famous location Lightning Ridge region of Australia, then the specimens will contain precious opal, among the most beautiful amazing natural objects on earth. Name opal in the English language comes from Ancient word Opalus Latin, meaning play of colors of precious gemstones.Precious Australian opal hardness about 6 average starts from 5.5 to 6.5 opals consists, of Hydrated amorphous Silica, that makes for unique play of colors meaning different colors will flash when rotating seen by the human eye. This characteristic of most opal gemstones discovered around the world,play of colors caused by silica spheres cemented together silica, and depending on the amount silica spheres the arrangement tightness of the silica spheres, determent brilliant of opal grades, commercial grade or semiprecious and A quality. Handmade Black Opal Rings. Black opal necklace. Theory some types of opal gemstones exist because of volcanic rocks in cavities and cracks, sedimentary volcanic percolating water in the ground with timing, dissolves silica that precipitates to make raw silica spheres opal colors or play of colors, particularly when the stones are cut and polished, opal can replace wood fossils seeds in many living things, such as shells and animal bones that lived over 110,000,000 years ago, original material had dissolved. Graham Black opal necklace all...

How To Price Opals. And Pricing Black Opals.

Posted by opals on Dec 17, 2015 in about opals, Black opal earrings, Black opal jewellery, Black opal jewelry, Black opal rings, Black opals, Care for opal jewelry, Cutting opals, Handmade opal jewelry, Handmade opal necklace, How to price opals, opal jewellery, Opal jewelry, opal ring, opal ring, opal ring handmade, Opal ring, Articles Jewelry., Opals for sale, selling opal jewelry, Wholesale opals |

How price opals when buying. How price opals before buying opal jewelry learn how to price opals, look for the best opal quality. Very easy to answer Australian industry has the best quality in every grade, semiprecious commercial grade and the best gem quality. I do not want you to get deeply into the professional dealing and wholesale side of pricing as this gemstone is the most difficult to price by far and will only confuse you. Simply buy the black opal that appeals to you about black opal rings , purples and lavender colors most affordable, then you’re looking at blue color, going up in price green color, then orange and the most expensive red. Remember you want a big deduction in price if any of these colors are not dazzling bright and clear, also without black and grey in the face of the gemstone, but little bit of black is quite acceptable. How opals price. But you must remember two colors are more expensive than single colors, purple and red is not always necessary more expensive then orange and green, if the red color is only noticeable from one direction when viewing and turning the ring jewelry. Simply if the orange and green color is more intense visually from two or three angles when you are viewing, this will make the green and orange color gemstone more expensive then the red and purple opal. If the gemstone is a high dome cabochon you’re looking at 30% up from a flat gemstone. White opal is a lot less than Crystal in price but a predominately black body tone N1 or N2 very dark around the sides. Another term semi black, where this jet black color comes through the centre where the colors on top will sit directly on the black background is priced 30% higher than Crystal opal, and Australian Crystal is much more stable then Mexican or Ethiopian Equivalent. The back of the gemstone is not that important as long as it is not to thick or thin without to much sand. The bottom line is it is always in the eye of the beholder simply by the one appeals to you the most, so this guide will be enough with out confusing the new first time opal buyer. Last of all good symmetrical shapes, oblong and round cut gemstones are very sought after so they will have a higher price tag then none symmetrical shapes. How price opals and how opals are formed. Opal are formed in different way’s and many theories have been published, along with evidence to demonstrate how the gemstone opal formed. Opal fields have many things in common sedimentary host rocks Jurassic and Cretaceous period around the great artesian basin situated in the outback of the semi and arid regions of Australia. Unfortunately some of the different associations like GIA classifying systems...

Posted by opals on Jul 26, 2015 in about opals, Australian opal jewelry, Australian opal ring, Black opal jewellery, Black opal jewelry, Black opal rings, Care for opal jewelry, fire opal jewelry, Handmade opal jewelry, How to price opals, Jewelry October, october birthstones, October gemstone, Opal engagement rings, opal jewellery, Opal jewelry, opal ring, opal ring, opal ring handmade, Opal ring, Articles Jewelry. |

Hand made opal ring Australian opals custom made opal rings jewelry design’s. Hand made opal ring best opals best price you will fine any where. Amazing Offer Sale for Customers simply if you choose one of the opals, over $199 we will make free of charge one handmade design for you free of charge. Graham supply certificate with all our handmade opal rings stating guarantee 100% solid Australian gemstones from the best mining location in the world. Guys don’t miss out on this deal one free handmade jewelry custom ring design with no charge, if customers purchase one gemstone over $199 all information below on this article about custom jewelry special sale. Hand made opal ring by Goldsmith old and experienced, our graphic web designer did not major in English but the goldsmith is a Master artisan, and this site has the best prices for unique opal jewelry. Certificate will state jewelry is hand made opal ring from Graham Black the only Heritage mine Leased at the 3 mile location Lightning Ridge Australia recognized as the best discovery ever discovered internationally amongst the finest handcraft jewelers of the world. Guarantee stating money back in full no ? you only have to provide us with a recognized Lab gem and jewelry testing certificate stating otherwise, but as this can never be the case as we mine the gemstones ourselves and never purchase from middlemen, passing the savings on to our customers as you are purchasing direct from the mine at wholesale price, this is one reason why our gemstones go up in price quickly appreciating the investment. Hand made opal ring on sale. Sapphires are very limited in colors and patterns and customers do not have much of a range or choice. Jewelry is like fashion the customer must have the final say on what design colors shapes and patterns and budget and opals gives you the freedom, this particular gemstone you can have unlimited color choice when designing your next custom ring. Rubies which are very limited in colors and patterns so customers have very little choice, this applies to most commercial grade gemstones and A grade gemstones. Jadeite similar but more choice in color range than rubies and sapphires, but unlike Australian gemstones which have unlimited patterns and so many colors, so when you decide on your next fashion statement, a beautiful handmade jewelry design from Graham Black heritage opals direct from the primary producer, the man who discovered the last deposit of the most beautiful, from the most famous location in the world Lightning Ridge 3 mile site. Graham also is a jeweler designer and you can cut out all the middle people saving you up to $1000 on custom-made jewelry. Hand made opal ring on sale. Hand made opal ring do not forget the gemstones come direct at wholesale prices saving you a lot of money up to 50% on...

Posted by opals on May 22, 2015 in about opals, Australian opal centre, Black opals, Cutting opals, History of black opals, How to price opals, Lightning Ridge opal miners, National symbols Australia, october birthstones, October gemstone, Opal certificates, Opal ring, Articles Jewelry., opals, Polished opals, Wholesale opals |

Opal mines in Australia at Lightning Ridge black opals. Opal mines in Australia best quality are only found in and around the town of Lightning Ridge in the state of New South Wales, the rarest and best quality black group is N1 N2 only found in lightning Ridge Australia. Black opal is the official state symbol of the State NSW and all opals from Australia are classified as the official national symbols along with the Australian flag emblems etc. Graham Opal mines the only official government State heritage listed opal mine in Australia the only Lightning Ridge heritage listed opal mines location is situated at the 3 mile also known as the lunatic Hill, 10 minute drive from downtown lightning Ridge, the mine was also listed on a National Australian registry. This particular opal mine is very rare produced green and yellow color gemstone two official Australian national emblem, also the N1 N2 black gemstone the official state NSW symbol, Guinness Book of World Records famous gemstone, Heritage listed opal mine and more accolades the opal mine is known to produce the best quality ever discovered in the world. Google maps showing the location of Mr Graham Black famous opal mine, next door to where the Guinness book of record World famous opal was discovered. Graham Black famous opal mine at Lightning Ridge Capital black opals Australia. The state of Queensland Australia opal mines produce large amounts of boulder opal, mostly thin seams of crystal color trapped inside the rock ironstone mostly semiprecious. South Australia the major producer of crystal and white opal in the world, today the country of Ethiopia is most likely producing more crystal then the mining towns of South Australia. One thing i can say the crystal opal mines in Australia are by far the brightest most beautiful crystal colors ever discovered. But the most dazzling fire opal colors come from the black opal mines in the state of New South Wales Australia, this location in and around town has the most dazzling fire in the gemstone but also amazing patterns, picture stones resembling butterflies and many objects of beauty along with rare harlequin pattern, galaxy and the pattern list goes on. Opal mines Lightning Ridge black opal mining Australia. My favorite and a very unusual Australian opal mines location is at Lightning Ridge mineral claims district, Office of resources & energy, Lot 60 Morilla street Lightning Ridge N.S.W 2834 Australia, N.S.W State gemstone emblem is black opal,official symbol New South Wales . Opal mines in Australian N.S.W State official museum under construction name the Opal centre at Lightning Ridge the only black opal country in Australia. The state heritage listed site place which represents two official national Australian emblem, one is the gemstone national emblem & at the same location green and yellow opal the National colors emblem of Australia,...

Posted by opals on Mar 29, 2015 in buy sell custom opal rings, Care for opal jewelry, Custom opal diamond ring, Cutting opals, fire opal jewelry, Handmade opal jewelry, Handmade opal necklace, How to price opals, october birthstones, October gemstone, Opal engagement rings, opal jewellery, Opal jewelry, opal ring, opal ring, opal ring handmade, Opal ring, Articles Jewelry., Opals for sale, Tucson Gem Show, Wholesale opals |

Fire opal very bright or red orange colors. Fire opal from the only Government Official listed Heritage Register opal mine. List as item of environmental heritage in LEP National Trust Australia Register. Handmade opal necklace the best quality opal gemstones ever discovered in the world. Fire opal specialist Graham has the best prices for unique fire opal rings, and the best quality black opals ever discovered, direct from our Goldsmith Master Artisan that did not major in British English, but you will not find more honest affordable custom jeweler, excuse the graphic web designer also because the guy’s from India. Sale wholesale prices fire opal and Australian opal rings,black fire opal rings and handmade jewelry,black opal jewelry and Australian opal jewelry. Fire opal jewelry stores at wholesale price direct & Graham provide you with a certificate, we are Australian opal gemstone specialist in the Industry . Graham the only opal experts with Government official Heritage listed opal mine, because the stones are known as the best quality. From the capital of the black opals Industry in the Premier State Capital Sydney Australia. Over 40 years experience in the industry prices in $U S dollars for custom Australia opal jewelry , fire opal necklace online opal necklace,handmade opal necklace also fire opal earrings. Fire opal Graham looking for some lightning Ridge opal miners to work a claim of his red fire opal mine. At the riches field in modern times Australia N.S.W at the Corcoran mines, these days it’s all open cut around these rich old mines like dead bird mining area. Lightning Ridge is worked out only open cut mining and thats a big gamble with to many rehabilitation and cost, bonds deposits this is a very expensive operation compared to shaft and tunneling. My opal mine is 30 minutes out of town and is still solid on the second level, first level 50% worked with beautiful black multi color red fire opal in the face and crystal along with seam in the floor, I worked the opal claim from the start of the rush 1990, above me was Guy Carl and Stefan, Aussie worked a claim little bit over from Beno’s Stefan and brother Peter and his mate Bundoon working at Kelly’s Corcoran also, which is the first turn off right hand side before Stoney’s rush about another kilometer straight down the road. Fire opal mine. I give excellent deals very large percentage to you guys 80% you provide machinery and finance operation, as I have done well out of the mining over the years so I am happy to spread it around. I understand your hesitant and need to be secure and not thrown out of the claim when we fine the next pocket of gem red on black opal. You do not have too trust my word if its honest, as I am prepared to sign the opal...

Posted by opals on Jan 8, 2015 in Australian opal jewelry, Australian opal ring, Black opal jewellery, Black opal jewelry, Black opal rings, Black opals, fire opal jewelry, How to price opals, Jewelry October, october birthstones, opal jewellery, Opal jewelry, Opal jewelry Ebay, opal ring, opal ring, opal ring handmade, Opal ring, Articles Jewelry., opals, Opals for sale |

Opal jewelry ebay many are not selling Australian black opal. Opal jewelry ebay cut out all the middlemen like people selling Opal jewelry on ebay, and save lots of your hard earned money by going direct to source, Graham Black the custom opal jeweler and the primary producer opal miner. Opal jewelry ebay or from Graham Black famous opal mine with Australian Government official listed premier State Heritage Register, Graham Black opal mine list as item of environmental heritage in LEP National Trust of Australia Register. Opal jewelry eBay Warning a lot of Ethiopian treated black opal is being past off as Australian black opal gemstones , stating with no treatment. Sellers should state with no treatment or treatment, many Ethiopian opals are being sold as Australian opals also. Opal Diamonds Rings Still Available. Graham’s Amazing Offer Sale for Customers, free Custom made jewelry simply if you buy one opal over $199. Graham will hand make free of charge one custom ring or pendent design jewelry free of charge. Best prices here Graham has better prices then you will fine any where for handmade opal jewelry. Opal jewelry ebay compared to the Australian produces 100% of black opal on the market, has very strong regulations and the industry produces the most outstanding, highest quality-best opal gemstones used in quality jewelry around the world. Unfortunately a lot of inferior Ethiopian opal being sold on eBay as Australian opals-along with opal jewelry eBay, seller have on display jewelry usually manufactured in India and the gemstones not Australian but from the country of Ethiopia. Opal jewelry ebay amazing the black opals on eBay wow over 90% of opal sold as black opal or semi black opal gemstones N1 N2-N3-N4 on eBay,would not be classified as black opal by gemstone testing Lab’s, for example the largest Gemology institute GIA-headquarters based in the United States of America. Regardless where the opals are sold in a jewelry shop or online internet, “But a word of warning”. Do not buy stones without a proper grading report, for example, GIT, IGI, GIA are very good. Be very careful when dealing with an unknown grader, Never trust an in-house grading report. Opal jewelry ebay. As i am the gemstone producer miner i know what i found and where in Australia, so i do not have time to have all my stones tested by Gemology institute and grading labs, I do have quite a few reports from institutes, I simply advise people to purchase one gemstone then simply have GIA institute test, if the gemstone is not solid without any treatment and they will give you a report in writing. I like to give 30 day minimum guarantee 100% money back no question asked if found otherwise, my guarantee is good and starts the day of delivery to you. This way you know what you have then simply have your jeweler make a ring...