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Birthstones: Stick with the Standards Or Choose Your Own

Story by Kenneth H. Rohn For as long as humans have been fascinated with precious gems, they have assigned special significance to them. The 12...

Rock & Gem Kids: Setting Sights on Spinel

By Jim Brace-Thompson Spinel (magnesium aluminum oxide) forms beautiful crystals that are sometimes confused for the brilliant-red gem variety of corundum known as ruby. Unlike...

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