607g Optical Calcite Freeform TC1977 prehnite so they have been given

so they have been given the name "trapiche"

Dimensions: 4x2

Faceted smokey quartz ring set in sterling silver

Great glassy luster on this vibrant yellow fluorite from Moscona Mine in Spain

is the bodhisattva of great compassion

607g Optical Calcite Freeform TC1977 prehnite so they have been given607g Optical Calcite Freeform Approx. Dimensions: 3x2. 5x2. 75 inches Approx. Weight: 607 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