Industry analysts project that by 2025, 20% of all diamonds on the market will be laboratory-grown. Indeed, the gem industry has seen a significant increase in the quantity, size, and quality of ...

Explore the world of diamonds and colored gemstones.

The museum’s mineral reference collection is one of three in the Department of Mineral Sciences: minerals (including gems), meteorites, and rock and ore. Dr. Post explains that this part of the museum ...

We’ve traveled to the Carnegie Institution of Washington—more specifically the Institution’s Department of Terrestrial Magnetism—to document Dr. Shirey’s work on determining the age of diamonds from ...

The fee for the GIA Laboratory-Grown Diamond Quality Assessment is US$15 per carat, with a minimum fee of $15. Submissions that do not meet the minimum criteria for assessment will be charged a US$5 ...

Sri Lanka has two monsoon seasons that occur at different times of the year depending on the part of the country. The northeast has monsoons from December through March. In the southwest, where most ...

During an expedition to China, a GIA team was introduced to the largest jadeite boulder being carved. This amazing blend of nature’s beauty and man’s artistry is an ongoing project to which master ...

Filigree inlay art originated in the Warring States Period (475-221 BC). At the time, it was called “Jin Yin Cuo,” which involved painting gold and silver on the surface of bronze artworks. With the ...

Todd’s Gems Todd Wacks outlines how garnets believed to be “regular” Tanzanian rhodolite when discovered in the late 1980s turned out to be rare color-change pyropes instead. In this video, he ...

Once a gem is submitted: Your name or store info is removed, so analysis is completely unbiased. Every gem, whether from a local jeweler or a globally recognized brand, is evaluated using the same ...

Zoe Michelou, marketing manager for a Nigerian mining company, gave an update in Tucson on the production of gemstones, particularly tourmaline. She primarily handles sales and marketing of rubellite ...