Robuta

https://www.gia.edu/gems-gemology-spring-2015 Spring 2015 Gems & Gemology | The Quarterly Journal of the Gemological Institute of America the quarterly journalspring 2015gems gemologygemological institute https://www.gia.edu/gems-gemology-summer-2020 Summer 2020 Gems & Gemology | The Quarterly Journal of the Gemological Institute of America the quarterly journalsummer 2020gems gemologygemological institute https://www.gia.edu/gems-gemology-fall-2014 Fall 2014 Gems & Gemology | The Quarterly Journal of the Gemological Institute of America the quarterly journalfall 2014gems gemologygemological institute https://www.gia.edu/gems-gemology-summer-2022 Summer 2022 Gems & Gemology | The Quarterly Journal of the Gemological Institute of America the quarterly journalsummer 2022gems gemologygemological institute https://www.gia.edu/cn/gems-gemology Winter 2025 Gems & Gemology | The Quarterly Journal of the Gemological Institute of America the quarterly journalwinter 2025gems gemologygemological institute https://www.gia.edu/gems-gemology-fall-2021 Fall 2021 Gems & Gemology | The Quarterly Journal of the Gemological Institute of America the quarterly journalfall 2021gems gemologygemological institute https://www.gia.edu/gems-gemology-winter-2024 Winter 2024 Gems & Gemology | The Quarterly Journal of the Gemological Institute of America the quarterly journalwinter 2024gems gemologygemological institute https://www.gia.edu/gems-gemology-spring-2029 Spring 2024 Gems & Gemology | The Quarterly Journal of the Gemological Institute of America the quarterly journalspring 2024gems gemologygemological institute https://www.gia.edu/gems-gemology-spring-2021 Spring 2021 Gems & Gemology | The Quarterly Journal of the Gemological Institute of America the quarterly journalspring 2021gems gemologygemological institute https://www.gia.edu/jp/gems-gemology Winter 2025 Gems & Gemology | The Quarterly Journal of the Gemological Institute of America the quarterly journalwinter 2025gems gemologygemological institute https://www.gia.edu/gems-gemology/gems-gemology-summer-2017 Summer 2017 Gems & Gemology | The Quarterly Journal of the Gemological Institute of America the quarterly journalsummer 2017gems gemologygemological institute https://www.gia.edu/gems-gemology-fall-2022 Fall 2022 Gems & Gemology | The Quarterly Journal of the Gemological Institute of America the quarterly journalfall 2022gems gemologygemological institute https://www.gia.edu/gems-gemology-spring-2016 Spring 2016 Gems & Gemology | The Quarterly Journal of the Gemological Institute of America the quarterly journalspring 2016gems gemologygemological institute https://www.gia.edu/gems-gemology-winter-2023 Winter 2023 Gems & Gemology | The Quarterly Journal of the Gemological Institute of America the quarterly journalwinter 2023gems gemologygemological institute https://www.gia.edu/gems-gemology-spring-2024 Spring 2024 Gems & Gemology | The Quarterly Journal of the Gemological Institute of America the quarterly journalspring 2024gems gemologygemological institute https://www.gia.edu/gems-gemology/summer-2017-gemnews-freshwater-imitating-south-sea-cultured-pearls Dyed Yellow Beaded Freshwater Cultured Pearls Imitating South Sea Cultured Pearls | Gems & Gemology A yellow cultured pearl necklace is compared to the work of a producer specializing in freshwater pearls of all colors. freshwater cultured pearlssouth seadyedyellowbeaded https://www.gia.edu/JP/gems-gemology/spring-2015-amethyst-from-boudi-morocco Amethyst from Boudi, Morocco | Gems & Gemology An introduction to Moroccan amethyst, which features distinctive color zoning and inclusions. amethystboudimoroccogemsgemology https://www.gia.edu/CN/gems-gemology/winter-1984-ruby-glass-kane Natural Rubies with Glass-Filled Cavities | Gems & Gemology An examination and analysis of 15 natural rubies with glass-filled cavities. naturalrubiesglassfilledcavities https://www.gia.edu/gems-gemology/spring-2019-method-determining-tourmaline-species-la-icp-ms A New Method for Determining Gem Tourmaline Species by LA-ICP-MS | Gems & Gemology Presents a simplified but comprehensive classification of gem tourmaline species based on quantitative measurement of six common major elements. https://www.gia.edu/gems-gemology/fall-2015-microworld-modified-rheinberg-illumination Modified Rheinberg Illumination | Gems & Gemology A lighting method modified for gemological microscopy provides false-color contrast to enhance inclusion scenes. modifiedrheinbergilluminationgemsgemology https://www.gia.edu/gems-gemology/WN13-Long-Gemstone-Mining-Vietnam Update on Gemstone Mining in Luc Yen, Vietnam | Gems & Gemology Explores the emergence of the Luc Yen area as a producer of corundum, spinel, tourmaline, and other colored stones. gemstone miningluc yenupdatevietnamgemology https://www.gia.edu/gems-gemology/fall-2019-gemnews-nigeria-blue-gahnite Blue Gahnite from Nigeria | Gems & Gemology LA-ICP-MS analysis helps researchers better understand the composition of this type of spinel from Nigeria. from nigeriabluegahnitegemsgemology https://www.gia.edu/gems-gemology/winter-1988-oregon-opals-smith Opals from Opal Butte, Oregon | Gems & Gemology Recent mining at Opal Butte in northeastern Oregon has produced a wide variety of large flawless opals. opalsbutteoregongemsgemology https://shopglobalgemology.com/ Global Gemology's Rare Gems & Jewels Global Gemology's collection of rare gems and jewels has been curated by The World's Most Credentialed Jewelry Appraiser™, Scott Papper. Browse our selection... rare gemsglobalgemologyjewels https://www.gia.edu/CN/gems-gemology/summer-2018-labnotes-one-natural-melee-diamond-found-in-large-batch-of-hpht-synthetic-melee One Natural Melee Diamond Found in Large Batch of HPHT Synthetic Melee | Gems & Gemology A single natural diamond is found within the largest percentage of undisclosed synthetic melee submitted to GIA. https://www.gia.edu/exhibition-review-illuminations-earth-jewel Exhibition Review: Illuminations, from Earth to Jewel | Gems & Gemology A review of Illuminations, from Earth to Jewel, at the Museum of Mineralogy at the ParisTech School of Mines in France. exhibition reviewilluminationsearthjewelgems https://www.gia.edu/JP/gems-gemology/fall-2012-vietnam-huong Gemstones from Vietnam: An Update | Gems & Gemology This article describes the major gem materials of Vietnam, together with their new finds and recent production. from vietnaman updategemstonesgemology https://www.gia.edu/JP/gems-gemology/winter-1988-irradiation-radioactivity-ashbaugh Gemstone Irradiation and Radioactivity | Gems & Gemology With the increasing use of radiation to color enhance gemstones, the issue of radioactivity has become a source of concern for gemologists worldwide. gemstone irradiationradioactivitygemology https://www.gia.edu/gems-gemology/winter-1985-pearl-chicken-nassau The Pearl in the Chicken: Pearl Recipes in Papyrus Holmiensis | Gems & Gemology Several pearl-in-chicken cleaning experiments are carried out to test the validity of recipes from an ancient Egyptian source. the pearlchicken recipespapyrusgemsgemology https://www.gia.edu/gems-gemology-publication-info-summer-2017 Summer 2017 G&G Publication Information | Gems & Gemology summer 2017publication informationg https://www.gia.edu/gems-gemology/winter-2016-labnotes-dyed-green-beryl0 Dyed Green Beryl | Gems & Gemology A step-cut beryl is dyed to simulate emerald. green beryldyedgemsgemology https://www.gia.edu/CN/gems-gemology/summer-1994-sapphires-rubies-vietnam-kammerling Update on Mining Rubies and Fancy Sapphires in Northern Vietnam | Gems & Gemology Northern Vietnam began producing significant quantities of rubies and fancy sapphires in the late 1980s. https://www.gia.edu/gems-gemology/fall-1993-edwardian-jewels-misiorowski Jewels of the Edwardians | Gems & Gemology Although the reign of King Edward VII of Great Britain was relatively short (1902-1910), the age that bears his name produced distinctive jewelry. of thejewelsedwardiansgemsgemology https://www.gia.edu/gems-gemology/winter-2018-history-and-reconstruction-of-amber-room The History and Reconstruction of the Amber Room | Gems & Gemology Chronicles the history of this cultural landmark, originally assembled for the Prussian king between 1701 and 1714, and its reconstruction by the Soviet Union... the historyamber roomreconstructiongemsgemology https://www.gia.edu/gems-gemology/spring-2018-gemnews-supply-chain-transparency-and-beneficiation Supply Chain Transparency and Beneficiation | Gems & Gemology Jean Claude Michelou shares his perspective on supply chain transparency and beneficiation in source countries. supply chain transparencybeneficiationgemsgemology https://www.gia.edu/gems-gemology/summer-1996-shewa-province-opal-johnson Opal from the Shewa Province, Ethiopia | Gems & Gemology Opal occurs as nodules in volcanic rocks at a new gem opal locality in the Menz Gishe district of Shewa Province, Ethiopia. from theshewa provinceopalethiopiagems https://www.gia.edu/CN/gems-gemology/winter-1995-diamond-history-africa-janse A History of Diamond Sources in Africa: Part I | Gems & Gemology For more than 100 years, Africa has produced large commercial quantities of diamonds and important individual stones. a historyin africadiamondsources https://www.gia.edu/gems-gemology/winter-2019-alexandrite-geographic-origin-determination Geographic Origin Determination of Alexandrite | Gems & Gemology The geographic source of this rare color-change gem has a significant impact on value. Trace element chemistry profiles allow GIA to accurately determine... geographicorigindeterminationalexandritegems https://www.gia.edu/gems-gemology/winter-2007-cvd-grown-synthetic-diamonds-wang Latest-Generation CVD-Grown Synthetic Diamonds from Apollo Diamond Inc. | Gems & Gemology High-quality CVD-grown diamonds, comparable in color and clarity to natural diamonds, can be identified using a combination of gemological and spectroscopic... synthetic diamonds https://www.gia.edu/JP/gems-gemology/fall-2014-labnotes-cvd-synthetic-diamond-with-unusual-inclusions CVD Synthetic Diamond with Unusual Inclusions | Gems & Gemology Examination of a CVD synthetic diamond with an unusual pattern of growth dislocations that resemble natural inclusions. synthetic diamondcvdunusualinclusionsgems https://www.gia.edu/gems-gemology/summer-2014-labnotes-rare-faceted-wurtzite Rare Faceted Wurtzite | Gems & Gemology A stone submitted for identification is revealed to be the first wurtzite examined by the GIA lab. rarefacetedwurtzitegemsgemology https://www.gia.edu/gems-gemology/winter-1982-chanthaburi-trat-gem-keller The Chanthaburi-Trat Gem Field, Thailand | Gems & Gemology Thailand has become the world's major source of gem ruby. chanthaburitratgemfieldthailand https://www.gia.edu/gems-gemology/winter-1984-garnet-color-manson Pyrope-Spessartine Garnets with Unusual Color Behavior | Gems & Gemology Unusual color-change garnets. pyropespessartinegarnetsunusualcolor https://www.gia.edu/gems-gemology/spring-2018-gemnews-preview-of-nature-art-science-with-paula-crevoshay0 Preview of Nature Art Science with Paula Crevoshay | Gems & Gemology Renowned designer Paula Crevoshay discusses artistic influences and her latest creations. nature artpreviewsciencepaulagems https://www.gia.edu/JP/gems-gemology/fall-2010-diamond-pearl-shor An Era of Sweeping Change in Diamond and Colored Stone Production Markets | Gems & Gemology The diamond, colored stone, and pearl businesses have witnessed unprecedented change since the turn of the 21st century. https://www.gia.edu/gems-gemology/spring-2019-microworld-native-copper-inclusions-in-indonesian-purple-chalcedony Native Copper Inclusions in Indonesian Purple Chalcedony | Gems & Gemology Indonesian purple chalcedony containing interesting native copper inclusions is a first for the Carlsbad lab. native copperin indonesianpurple chalcedonyinclusionsgems https://www.gia.edu/gems-gemology/fall-1988-orthoamphibole-wyoming-dietrich A Gem-Quality Iridescent Orthoamphibole from Wyoming | Gems & Gemology A gem-quality iridescent orthoamphibole from Wyoming, similar to that described from Greenland, has been identified. a gemqualityiridescentwyominggems https://www.gia.edu/JP/gems-gemology/fall-2004-amethyst-four-peaks-arizona-lowell Amethyst from Four Peaks, Arizona | Gems & Gemology For more than a century, the Four Peaks mine in Maricopa County, Arizona, has produced gem-quality amethyst. four peaksamethystarizonagemsgemology https://www.gia.edu/gems-gemology/winter-2018-gemnews-microscopic-observations-blue-sapphires-treated-heat-pressure Microscopic Observations of Blue Sapphires Treated with Heat and Pressure | Gems & Gemology A previously unreported microscopic feature could be a useful indicator for corundum treated with heat and pressure. blue sapphires https://www.gia.edu/CN/gems-gemology/spring-2016-labnotes-largest-blue-hpht-synthetic-diamond Largest Blue HPHT Synthetic Diamond | Gems & Gemology Analysis of a 5.03 ct HPHT-grown blue synthetic diamond, the largest ever examined by GIA. synthetic diamondlargestbluehphtgems https://www.gia.edu/gems-gemology/winter-1997-synthetic-moissanite-nassau Synthetic Moissanite: A New Diamond Substitute | Gems & Gemology Synthetic moissanite is much closer to diamond in overall appearance and heft than any previous diamond imitation; this article reports on how to identify and... a newdiamond substitutesyntheticmoissanitegems https://www.gia.edu/CN/gems-gemology/summer-2018-labnotes-15-carat-hpht-synthetic-diamond 15 Carat HPHT Synthetic Diamond | Gems & Gemology A synthetic diamond seen in the Carlsbad lab is the largest faceted lab-grown diamond examined by GIA. 15 caratsynthetic diamondhphtgemsgemology https://www.gia.edu/CN/gems-gemology/winter-1996-imperial-topaz-brazil-sauer An Update on Imperial Topaz from the Capao Mine, Minas Gerais, Brazil | Gems & Gemology The Capao mine is one of the oldest and most productive fully mechanized Imperial topaz mines in the historic Ouro Preto area of Minas Gerais, Brazil. https://www.gia.edu/gems-gemology/winter-2019-geographic-origin-dilemma The Geographic Origin Dilemma | Gems & Gemology An overview of the geographic origin complexities facing the gem and jewelry industry today. geographicorigindilemmagemsgemology https://www.gia.edu/gia-news-research/earrings-popular-history-ancient-to-modern Books: I Love Those Earrings: A Popular History from Ancient to Modern | Gems & Gemology Review of I Love Those Earrings: A Popular History from Ancient to Modern, by Jane Merrill with Chris Filstrup books i love https://www.gia.edu/gems-gemology/fall-1990-imitation-pearls-hanano0 Majorica Imitation Pearls | Gems & Gemology The Majorica S.A. product is remarkably similar in appearance to saltwater cultured pearls. imitation pearlsmajoricagemsgemology https://www.gia.edu/gems-gemology/spring-2017-japanese-jadeite-tables Japanese Jadeite Tables | Gems & Gemology Examines the sources, color, texture, and chemical composition of jadeite from Japanese deposits. japanesejadeitetablesgemsgemology https://www.gia.edu/gems-gemology/winter-2016-synthetic-emeralds-richard-nacken-1920s Synthetic Emeralds Grown by Richard Nacken in the Mid-1920s | Gems & Gemology Describes the chemical, morphological, and microscopic properties of the first gem-quality synthetic emeralds ever produced, offering a historical perspective... synthetic emeralds https://www.gia.edu/gems-gemology/spring-2020-gemnews-nephrite-jade-from-multiple-sources Nephrite Jade from Multiple Sources | Gems & Gemology Pakistan is an emerging source of green nephrite jade, joining established locations in British Columbia and Siberia. nephrite jademultiplesourcesgemsgemology https://www.gia.edu/CN/gems-gemology/summer-1986-four-important-gems-fryer An Examination of Four Important Gems | Gems & Gemology Several famous and historical gemstones in the Smithsonian's collection are examined and reported on. an examination offourimportantgemsgemology https://www.gia.edu/CN/gems-gemology/summer-2015-editorial The Beauty and Value of Inclusions, Plus Double Stars and Corundum from Tajikistan | Gems & Gemology We invite gemologists to take a closer look at the astounding beauty and variety of the micro-world of gems. https://www.gia.edu/CN/gems-gemology/winter-2014-gemnews-record-prices-at-gem-auctions Record Prices at Gem Auctions | Gems & Gemology Auction price records were broken in late 2014 as ultra-wealthy buyers vied for rare, important gemstones. record pricesat gemauctionsgemsgemology https://www.gia.edu/gems-gemology/spring-2017-gemnews-emerald-dealing-afghanistan Emerald Dealing in Afghanistan | Gems & Gemology An experienced gem dealer gives an overview of sourcing gem-quality Afghan emeralds. emeralddealingafghanistangemsgemology https://www.gia.edu/gems-gemology/fall-2012-gem-news-international Fall 2012 Gem News International | Gems & Gemology A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry... fall 2012news internationalgem https://www.gia.edu/gems-gemology/spring-2000-hpht-treated-type-iia-diamonds-fisher0 Spectroscopic Evidence of GE POL HPHT-Treated Natural Type IIA Diamonds | Gems & Gemology Results from spectroscopic analyses of GE POL high-pressure high-temperature (HPHT) annealed nominally type IIa diamonds are presented, and these spectral... https://www.gia.edu/JP/gems-gemology/spring-2014-labnotes-large-cvd-synthetic-diamond Round CVD Synthetic Diamond Over 1 Ct Identified in Hong Kong Lab | Gems & Gemology Advances in CVD growth technology have resulted in crystals that yield well-proportioned round brilliant cuts. https://www.gia.edu/gems-gemology/winter-2018-microworld-rose-in-demantopid-from-madagascar Rose in Demantoid from Madagascar | Gems & Gemology This demantoid garnet was of particular interest for a large inclusion resembling a flower. rosedemantoidmadagascargemsgemology https://www.gia.edu/gems-gemology/winter-2016-suggested-reading-inclusions-emerald0 Suggested Reading on Emeralds and their Inclusions | Gems & Gemology Suggested Reading on Emeralds and their Inclusions suggested readingemeraldsinclusionsgemsgemology https://www.gia.edu/JP/gems-gemology/fall-2014-gemnews-topazolite-in-mexico First Discovery of Topazolite in Mexico | Gems & Gemology Reports on the first discovery of fine topazolite garnet crystals in Mexico. first discoveryin mexicotopazolitegemsgemology https://www.gia.edu/gems-gemology/winter-1981-peridot-san-carlos-koivula San Carlos Peridot | Gems & Gemology Marketed throughout the world, San Carlos material is often confused with, and sold as, peridot from localities that are better known and documented. san carlos peridotgemsgemology https://www.gia.edu/gems-gemology/spring-2000-gem-news-international Spring 2000 Gem News International | Gems & Gemology A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry... spring 2000news internationalgem https://www.gia.edu/gems-gemology/fall-2015-colombian-trapiche-emeralds-recent-advances-understanding-formation Colombian Trapiche Emeralds: Recent Advances in Understanding Their Formation | Gems & Gemology Proposes a model for trapiche emerald formation based on petrographic, spectroscopic, and chemical examination. colombiantrapicheemeraldsrecentadvances https://www.gia.edu/CN/gems-gemology/winter-1985-amethyst-arizona-shigley Amethystine Chalcedony | Gems & Gemology chalcedonygemsgemology https://www.gia.edu/gems-gemology/summer-2015-labnotes-chemical-analysis-zircon Chemical Analysis of Zircon | Gems & Gemology Trace-element analysis is used to identify metamictization, treatment, and growth conditions of zircon. chemical analysiszircongemsgemology https://www.gia.edu/gems-gemology/fall-2017-microworld-quarterly-crystal-barite-fluorite Quarterly Crystal: Barite in Fluorite | Gems & Gemology A fluorite specimen hosts two eye-visible, prominent white barite inclusions. quarterlycrystalbaritefluoritegems https://www.gia.edu/gems-gemology/winter-1987-yellow-sapphire-nassau The Seven Types of Yellow Sapphire and Their Stability to Light | Gems & Gemology The authors determined that there are actually seven types of https://www.gia.edu/CN/gems-gemology/summer-2014-editorial Challenges and Opportunities | Gems & Gemology challenges and opportunitiesgemsgemology https://www.gia.edu/CN/gems-gemology/winter-2008-wittelsbach-blue-droschel The Wittelsbach Blue | Gems & Gemology This article describes what is known about the Wittelsbach Blue since it was first reported in 1666, and the gemological information released to date on this... wittelsbach bluegemsgemology https://www.gia.edu/CN/gems-gemology/winter-2000-gem-localities-1990s-shigley Gem Localities of the 1990s | Gems & Gemology The 1990s saw growth in gem exploration, production, and marketing worldwide. of thegemlocalities1990s https://www.gia.edu/gems-gemology/winter-2017-microworld-phenomenal-feldspar-inclusions New Phenomenal Feldspar from North Carolina with Iridescent Inclusions | Gems & Gemology A deposit in North Carolina yields potassium feldspar with a phenomenon similar to Australian rainbow lattice sunstone. north carolinanewphenomenalfeldspar https://www.gia.edu/book-review-women-jewellery-designers Book Review: Women Jewellery Designers | Gems & Gemology book reviewwomen jewellerydesignersgemsgemology https://www.gia.edu/CN/gems-gemology/spring-2015-blue-spinel-luc-yen-district-vietnam Blue Spinel from the Luc Yen District of Vietnam | Gems & Gemology Offers geological context and gemological characterization of this increasingly popular vivid blue spinel from northeast Vietnam. luc yen districtblue spinelfrom the https://www.gia.edu/gems-gemology/winter-1996-identification-black-gem-material-johnson0 Some Gemological Challenges in Identifying Black Opaque Gem Materials | Gems & Gemology Among the most difficult gems to identify are those that are black and opaque (or nearly so). gemologicalchallengesidentifying https://www.gia.edu/JP/gems-gemology/winter-2017-suggested-reading-ruby-chart Suggested Reading on Rubies and Their Inclusions | Gems & Gemology Suggested Reading on Rubies and Their Inclusions suggested readingrubiesinclusionsgemsgemology https://www.gia.edu/gems-gemology/summer-2016-challenges-cutting-large-gem-opal-rough The Challenges of Cutting a Large Gem Opal Rough | Gems & Gemology A first-person account of cutting a 3,019 ct piece of white opal to create a 1,040 ct gem with play-of-color across the surface. the challengescutting https://www.gia.edu/CN/gems-gemology/winter-2009-ruby-sapphire-shor Ruby and Sapphire Production and Distribution: A Quarter Century of Change | Gems & Gemology During the past 25 years, the corundum market has been transformed from one of medium to high-priced gems to one that encompasses nearly all price ranges. ruby and sapphire https://www.gia.edu/gems-gemology/spring-2018-editorial The Beauty of Natural Green Diamonds | Gems & Gemology the beautynatural greendiamonds gemsgemology https://www.gia.edu/gems-gemology/fall-2016-observations-cvd-grown-synthetic-diamonds-review Observations on CVD-Grown Synthetic Diamonds: A Review | Gems & Gemology Explores statistical data and defining characteristics of gem-quality CVD synthetic diamonds examined by GIA since 2003. synthetic diamondsobservationscvdgrownreview https://www.gia.edu/gems-gemology/wn13-book-review-italian-fashion-jewelry Books: Fashion Jewellery: Made In Italy | Gems & Gemology Chronicles the rise of Italian fashion jewelry from its traditional roots to the visually stunning designs of contemporary artists. made in italyfashion jewellerybooksgemsgemology https://www.gia.edu/gems-gemology/fall-2019-labnotes-laboratory-grown-sapphire-unusual-features Laboratory-Grown Sapphire with Unusual Features | Gems & Gemology The Hong Kong lab recently encountered a unique flame-fusion synthetic sapphire containing natural-looking features. laboratorygrownsapphireunusualfeatures https://www.gia.edu/gems-gemology/summer-2015-gemnews-synthetic-sapphire-diffusion-induced-color-star Synthetic Sapphire with Diffusion-Induced Color and Star | Gems & Gemology Diffusion treatment is used to induce color and asterism in a colorless synthetic sapphire. synthetic sapphirestar gemsdiffusioninducedcolor https://www.gia.edu/gems-gemology/summer-2016-microworld-garnet-inclusion-illusion Garnet Inclusion Illusion | Gems & Gemology A quartz double cabochon showcases a garnet placed to imitate an inclusion. garnetinclusionillusiongemsgemology https://www.gia.edu/CN/gems-gemology/summer-2014-labnotes-yellow-cvd-synthetic-diamond Yellow CVD Synthetic Diamond | Gems & Gemology A Fancy yellow type Ib CVD-grown synthetic diamond undergoes testing at the New York lab. synthetic diamondyellowcvdgemsgemology