pink gems

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.

Halides, carbonates, and sulfites are sedimentary minerals with many uses, from salt to manufacturing. Learn how to identify these minerals.…

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

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…

Zircon’s extraordinary fire and brilliance have enchanted civilizations for millennia. Ancient traders prized these gems across silk…

Disclosing enhancements is one of the most important responsibilities gemologists face. In fact, many countries are passing stricter laws…

Zircons are available as jewelry stones in many beautiful, sparkling colors, but are their colors natural? Are the zircons themselves natural,…