84g Optical Calcite Freeform TC2115 citrine also spelled Kuan Yin or

also spelled Kuan Yin or Guan Yin

5x1 inches

357g Optical Calcite Freeform

Scoria is a low density rock but

Dimensions: 3x3x3 inches

84g Optical Calcite Freeform TC2115 citrine also spelled Kuan Yin or84g Optical Calcite Freeform Approx. Dimensions: 1. 25x1. 25x1. 75 inches Approx. Weight: 84 grams Locality: Maharashtra, India Optical calcite is also referred to as Iceland Spar because of its first discovery in Eskifjord, Iceland. It is typically colorless, and exhibits the optical phenomenon of double refraction where an object viewed through the calcite will appear doubled. Double refraction, or birefraction, is also called birefringence and is