Clarity:  Nice crystal

It measures 53x22x25 mm

Product ID: SS0428

Weight: Silver and Gem 17

Specimen Size:   Miniature-Sized

Iceland Spar Optical Calcite | 60.8 Grams | Rhombohedral | China Lapis Lazuli Clarity: Nice crystalIceland spar, formerly called Iceland crystal (Icelandic: silfurberg [slvrprk], lit. 'silver rock') and also called optical calcite, is a transparent variety of calcite, or crystallized calcium carbonate, originally brought from Iceland, and used in demonstrating the polarization of light. The most common crystal structure of Iceland spar is rhombohedral, but other structures, such as scalenohedral or prismatic, can form depending on formation