✨Very Unique Rare Icelandic Spar with Siderite Inclusions #4 For Sale

Very Unique Rare Icelandic Spar with Siderite
InclusionsSize; last photo
Weight: 1.4oz
Origin: Iceland These crystals typically form with heavy, dirty-brown hues, streaks, or internal structural inclusions caused by trapped iron compounds and manganese oxideIceland Spar (or calc-spar) is a completely transparent, double-refractive variety of calcite.The Inclusions: While prized for being clear, it commonly contains honey-brown internal fractures or complex iron oxide phantoms.When light passes through, these brown internal inclusions can create a beautiful split "double-image" or flash vivid internal rainbows