Common
Iceland spar
Transparent variety of calcite
Iceland spar
Iceland spar, formerly called Iceland crystal (Icelandic: silfurberg [ˈsɪlvʏrˌpɛrk], lit. 'silver-rock') and also called optical calcite, is a transparent variety of calcite, a crystallized calcium carbonate, originally brought from Iceland and used in demonstrating the polarization of light.
Open boosters, collect cards and trade them. Free to play.
Play for free