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Gem formation usually involves mineral crystallization and other geological processes. Learn how these affect the gemstone properties gemologists…

Clam pearls can grow to be some of the largest in the world. Learn more about these aquatic gems and how to buy a top-quality tridacna pearl of your…

Learn how gemstone optical properties, like refractive index and pleochroism, help gemologists identify gems and lapidaries choose cuts.

Commentaries on the foundation stones of the Book of Revelation influenced the development of the Western birthstone system. Learn more about…

With bright rainbow iridescence, ammolite is sure to draw attention. Read about this gem’s unique quality factors before your next ammolite…

Crystals have habits. In crystallography, mineral habits refer to the way crystals form within a specific mineral. There are six crystal systems.…

Looking for alternatives to a classic diamond engagement ring? Learn about your options and see some wonderful photos of colored gemstone engagement…

Explore gemstone hardness, wearability, and durability. Learn how hardness, cleavage, and settings affect jewelry use. Essential for smart…

These cleaning tips will make polishing silver jewelry a little easier. Learn how to prevent tarnish and how to clean silver and pearl jewelry,…