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Andy Lucas, GIA’s education manager of field gemmology, researches and documents the mine to market journey of gemstones. Lucas shares the changes he observed in Colombia’s major emerald mining and cutting areas in a presentation he gave at the 2017 JCK Las Vegas show.
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Research using diamond presses gives insight into planetary formation
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Located near the Arctic Circle, Diavik is one of the world’s richest diamond deposits and a leader in sustainable mining.
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African-born coloured stone specialist visits America and changes his life forever; finding love, earning his GG and starting a new career.
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A diamond is proven to have a superdeep origin through an inclusion of CaSiO3-walstromite.
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Characterises a suite of 40 natural brown to black diamonds from this deposit so that they can be distinguished from suspected treated black diamonds.
Read More‘Adventure seeker’ crawls through underground caves to reach and research giant selenite crystals – then shares her knowledge with the world.
Read MoreThey met in the queue to get into the GIA Alumni Association Tucson party – and changed the course of their lives forever.
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Explores an exceptional family of diamonds, referred to as “CLIPPIR” (Cullinan-like, Large, Inclusion-Poor, Pure, Irregular and Resorbed), that formed in a super-deep environment.
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A first-hand look at Colombia’s emerald mines and the cutting and trading industry in Bogotá.
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