Colored StonesTop Story
Sotheby's reports record-breaking sales in GenevaJewels of historical importance and natural-color diamonds garnered "stunning" prices at Sotheby's "Magnificent Jewels" sale, held on Tuesday at the Hotel Beau Rivage in Geneva.Read More Colored Stone NewsSpotlightColor Market Reports
Ruby, sapphire expert Hughes wins Bonanno awardRichard W. Hughes, known for his adventure-laden travelogues, his writings on undisclosed gemstone treatments and as the author of Ruby and Sapphire, has won the 2010 Antonio C. Bonanno Award For Excellence in Gemology, the Accredited Gemologists Association has announced. Read More 
Scientists hail queen conch's cultured pearlsScientists from Florida Atlantic University's Harbor Branch Oceanographic Institute have announced the development of the first-ever technique to produce beaded (nucleated) and non-beaded cultured pearls from the queen conch. Read More 
GMA calls out dept. stores on composite rubiesNew York--Composite rubies found themselves in an unwelcome spotlight today on Good Morning America when an investigation by the ABC News morning show revealed some department stores selling the stones without adequate disclosure. Read More Treatments
AGL modifies heated-ruby disclosure wordingNew York--American Gemological Laboratories (AGL) is modifying the disclosure terminology it uses for treated rubies by exchanging the term "inorganic (fluxtype)" with "heating residues" in its descriptions of heat-treated rubies, the lab announced. Read More 
How do you heat-treat sapphires with beryllium?Gemology expert Mary Johnson gets into the nitty-gritty of some common colored-gemstone treatments. Read More Pearl Commission votes 'no' on 'cultured' diamondsDubai, United Arab Emirates--The CIBJO Pearl Commission has voted on a number of amendments to the Pearl Blue Book, a definitive set of standards for pearl grading, methodology and nomenclature that the commission has updated each year since the guide's publication in 2006. Read More |
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Pearl | Coral | Ruby | Emerald
Discover the latest jewelry trends in colored stones & gems like pearl, coral, ruby, and emerald. Read about gemstone marketing, color stones analysis reports and gemstone guides. Colored Stones & Gem Stone Treatments National Jeweler covers the latest colored stones news, reporting new jewelry industry activities in gems and the color market. Find information on colored stones testing, certification, and grading.