Sapphire

Despite some commonalities, there are significant differences between gemology and mineralogy. In this article, we’ll look at the materials…

We live in a world of crystals. You don’t have to dig deep into the Earth to find them. Even the bones in our bodies and the dust in the air contain crystals.…

We live in a world of minerals. They’re closer to you than you might realize, even if you don’t wear any gemstone jewelry. Minerals…

Crystallography is the study of crystalline solids and their properties. Learn how mineralogists use this to identify minerals.

Some mineral names can quickly yield important information about specimens. Learn how minerals get their names and how they’re classified.

Although phosphates and other mineral classes are rare, they still have species with important uses. Learn how to identify these minerals.

Mozambique rubies have drawn the attention of gem and jewelry lovers and investors. Learn what makes these African gems so appealing.

Oxides and hydroxides are mineral classes that include well-known gems as well as significant ores. Learn how to identify these minerals.

What tales could gems tell? Jeffery Bergman reviews Precious — The History and Mystery of Gems Across Time, a new book by Helen Molesworth.