Optical Calcite Freeform TC2017 septarian cube Stichtite is a rare carbonate

Stichtite is a rare carbonate mineral known for its distinctive pink to purple coloration

Northern Siberia

25" Ruby Fuchsite Freeform

Green Calcite Specimen on Acrylic Base

including blue

Optical Calcite Freeform TC2017 septarian cube Stichtite is a rare carbonateOptical Calcite Freeform Approx. Dimensions: 2. 5 x 1. 75 x 3 inches Approx. Weight: 420 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