Find out about how GIA is addressing industry concerns over undisclosed laboratory-grown and simulated fancy melee being mixed in with natural fancy melee.
Read MoreLearn about the differences – and similarities – between natural and laboratory-grown diamonds, and how GIA’s researchers and grading laboratories can tell the difference
Read MoreGIA’s services and instruments have grown in importance and impact as new gem treatments and laboratory-grown gems have entered the market.
Read MoreCharacterises the akoya cultured pearls produced on the eastern shoreline of Australia using native Pinctada imbricata fucata molluscs.
Read MoreLearn about Mozambican rubies, including their mining history, characteristics and market demand.
Read MoreGIA researchers in New York recently had the opportunity to examine one of the most interesting and unique diamond crystals ever found.
Read MoreCheck out some of the most interesting and unusual diamonds and coloured stones submitted to GIA’s laboratories in 2019.
Read MoreGIA researchers analysed more than 90,000 natural pink diamonds to better understand how these rare and beautiful diamonds formed and got their colour.
Read MoreA stone submitted for identification is revealed to be the first wurtzite examined by the GIA lab.
Read MorePurplish Pink Spinel from Tajikistan: Before and After Cutting
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