Gemstone Physical Properties

Step 2: Advanced Gemology

Lesson 2

gemstone physical properties -
Colemanite is a piezoelectric gem. When placed under pressure, it generates electricity. “Colemanite,” Thompson Shaft, Furnace Creek Wash, Ryan, Inyo Co., California, USA. © Rob Lavinsky, Used with permission.

The optical properties of gems attract our eyes and can give a cut stone a unique character. However, gemstone physical properties are also important. They determine a gem’s durability, guide faceters when they cut and set, and help us gemologists identify gemstones.

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