{"product_id":"rou_opt_calcite_os","title":"Optical Calcite Cleavage Unpolished | One Size","description":"\u003cb\u003e🌎  Source:  \u003cbr\u003e\u003cbr\u003e⚖️  Weight Range: 10-25 grams\u003cbr\u003e\u003cbr\u003eOptical calcite (also known as Iceland Spar) exhibits perfect rhombohedral cleavage in three directions. When broken, it naturally splits into slanted, parallelogram-like blocks called rhombohedrons rather than cubes. These cleavage planes intersect at angles of roughly 75 degrees and 105 degrees rather than at 90 degrees.\u003c\/b\u003e","brand":"Unearthed Crystals","offers":[{"title":"Default Title","offer_id":46787159523517,"sku":"ROU_OPT_CALCITE_OS","price":12.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1047\/7444\/files\/ROU_OPT_CALCITE_OS-10.jpg?v=1778818968","url":"https:\/\/www.unearthedcrystals.com.au\/products\/rou_opt_calcite_os","provider":"Unearthed Crystals","version":"1.0","type":"link"}