Tourmaline Buying Guide
Known for stunning, saturated hues, tourmaline is a colorful and modern gemstone. Read about quality factors for this gem in our tourmaline buying guide.
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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...
Tourmaline Value, Price, and Jewelry Information
Tourmaline is a name applied to a family of related minerals with widely varying properties. Tourmalines make very popular jewelry...
Rubellite Tourmaline Value, Price, and Jewelry Information
Rubellites are tourmalines with reasonably saturated dark pink to red colors and medium to dark tones. They make excellent jewelry...
Mint Tourmalines: Gemstones for Our Times
Mint tourmalines, with their pastel shades and great clarity, are becoming more popular. Learn why these gems are well-suited to...
Gemology Book Reviews: Careers
Learn how varied gemology careers can be. Our gemology book reviews highlight three different approaches — as art, science, and...
Augelite Value, Price, and Jewelry Information
Soft and brittle, rare augelites are difficult to cut and unsuitable for wear. Faceted transparent pieces are only found in...
Six Famous Aquamarines
Aquamarines have been cut into many large and beautiful gemstones. Let’s take a look at six of the world’s most...
Risk Management and Gem Buying for Profit
You can’t eliminate all risks from gem investing, but understanding the risks you’ll face and your appetite for them will...
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