69g Optical Calcite Freeform TC2127 moss agate Dimensions: 4x4x9

Dimensions: 4x4x9

and it may display interesting banding patterns

25x1x1 inches

This piece is double terminated

69g Optical Calcite Freeform TC2127 moss agate Dimensions: 4x4x969g Optical Calcite Freeform Approx. Dimensions: 1x1x1. 5 inches Approx. Weight: 69 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 also