inclusions

Gemology is both art and science. Learn how identifying gemstones combines traditional testing techniques, modern software, and deductive…

Considering buying gems in Afghanistan? Learn which Afghan gemstones to seek out, which to avoid, and prepare for a “buyer beware” experience.…

Technically, chalcedony (kal SED’ uh nee) is any form of microcrystalline or cryptocrystalline quartz, (meaning any form of quartz whose crystals…

Explore the mesmerizing world of agate — from its varieties to jewelry uses and sources. Uncover the secrets of these stunning gemstones!

Learn essential ruby buying tips from experts. Discover how to evaluate color, clarity, cut & carat weight. Avoid synthetic stones & treatments.…

Next to diamond, corundum is the hardest mineral known and is very compact and dense, with no cleavage. As a result, corundum is one of the best of…

Some opals from Spencer, Idaho show asterism or the “star stone” effect. Learn how to price these beautiful but rare star opals.

Turkey’s gemstones include well-known species such as diaspore, chalcedony, and purple jade, as well as unusual specimens of lesser-known gems.…

Learn about the different crystal growth methods used to artificially create gemstones in laboratories.