Iceland Spar Optical Calcite | 60.8 Grams | Rhombohedral | China | SO24
Iceland spar, formerly called Iceland crystal (Icelandic: silfurberg [ˈsɪlvʏrˌpɛrk], 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 conditions. Iceland spar is primarily found in Iceland but can occur in different parts of the world with suitable geological conditions such as China.
Name: Iceland Spar Optical Calcite
Specimen Size: Miniature-Sized
Dimensions: 30x27x25 mm / 1.2x1.1x1.0 inches
Weight: 60.8 Grams / 2.1 Ounces
Origin: Guangxi Province, China
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