How Do Tourmalines Form?
Tourmaline is a large crystalline silicate mineral supergroup that consists of many gem species that come in a rainbow of colors. Tourmaline is…
Adamite Value, Price, and Jewelry Information
Although adamite occurs in many localities, it’s very rarely cut as a gem. This mineral is much too soft and fragile for jewelry. However, collectors…
Ultimate Diamond Buying Guide
Buying a diamond doesn’t have to be difficult. Learn everything you need to know to buy the best diamond for your engagement ring.
Lapis Lazuli Value, Price, and Jewelry Information
Lapis lazuli has been used since ancient times and remains popular today. This gemstone has been prized for its bright, blue color and used for inlay…
Oregon Sunstone Buying Guide
Our Oregon sunstone buying guide can help you learn how these gems are graded and how to identify a high quality stone or a bargain in the rough.
Rubellite Tourmaline Buying Guide
Our rubellite buying guide can help you learn how rubellites are graded, what to avoid, and how to identify a high-quality stone or a bargain in the…
Paraíba Tourmaline Value, Price, and Jewelry Information
Discovered in 1989, paraíba tourmalines are among the world’s most prized gemstones. These rare gems are renowned for showing intense blue…
Emerald Myth Busters: Identifying Colombian Stones
Colombian emeralds can command premium prices. Jeffery Bergman separates emerald myth from fact when it comes to determining the origins of these…
Brian Gavin Diamonds Review
Brian Gavin Diamonds (BGD) have a reputation backed by their founder and namesake, a renowned expert in the diamond-cutting field. They…
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