sapphire

Yala Gems is a gemstone supplier headquartered in Singapore with decades of supplying wholesale gemstones such as Ruby, Emerald, Sapphire, Spinel,…

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.

How much are rubies worth? The best rubies are some of the most expensive colored gemstones on the market. One example is the 55.22 ct. Estrela de…

Spinel has been on quite a dramatic ride! Confused with corundum for centuries, it was only identified as an independent species of gemstone in…