Brendan Hoare specializes in mantle geochronology and geochemistry.

Evan M. Smith specializes in diamond geology.

Rachelle Turnier specializes in colored gemstone geochemistry

Bassoo specializes in Understanding the spatial distribution and geological causes of defects in green diamonds

Sona Tajiryan specializes in Early Modern History of Global Gem Trade.

Yang Mo specializes in Mathematics.

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Staff Picks

For more than two decades, former plumber, welder and jewelry store-owner Dyber has been dazzling the world with his brilliant stone carvings ranging from sizes that fit in the palm of the hand to 12-lb quartz behemoths that can dominate a room.

A native of Kenya, Susie Kennedy teamed up with her husband in the 1990s to establish their place in the gem industry.