77g Optical Calcite Freeform TC2103 enhydro Walter's attention to detail and

Walter's attention to detail and unique styling makes this one-of-a-kind Lemon Quartz piece a great addition for your collection

64g Optical Calcite Freeform

London Blue Topaz is a blue variety of the mineral topaz

otherwise known as black tourmaline

Dimensions: 4x3

77g Optical Calcite Freeform TC2103 enhydro Walter's attention to detail and77g Optical Calcite Freeform Approx. Dimensions: 1x1x2 inches Approx. Weight: 77 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