75g Optical Calcite Freeform TC2112 sulfur also known as tube-like agate

also known as tube-like agate or sagenite

His staff can change size

usually fracturing into rhombohedral shapes

Pakistan Yellow Calcite SphereApprox

Weight: 189 grams

75g Optical Calcite Freeform TC2112 sulfur also known as tube-like agate75g Optical Calcite Freeform Approx. Dimensions: 1. 5x0. 75x2. 25 inches Approx. Weight: 75 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