{"product_id":"optical-calcite-iceland-spar-freeform-blocks","title":"Optical Calcite (Iceland Spar) Freeform Blocks","description":"\u003ch2\u003eOptical Calcite (Iceland Spar) Freeform Blocks\u003c\/h2\u003e\n\u003cp\u003eThese beautiful Optical Calcite freeforms are crisp, luminous little blocks of light. Each piece has that unmistakable icy clarity Calcite is loved for, with natural internal lines, veils, and flashes that catch the light as you turn them in your hand. Subtle variations in transparency and texture mean each one feels completely individual — simple, striking, and quietly mesmerising.\u003c\/p\u003e\n\u003cp\u003eThey’re the kind of pieces that look understated at first glance… and then keep pulling your eye back in.\u003c\/p\u003e\n\u003cp\u003eOptical Calcite, also known as Iceland Spar, is a variety of Calcite that forms in clear, rhombohedral crystals. It’s famous for its natural double refraction, where light passing through the crystal appears split — a feature caused by the way Calcite crystallises within limestone environments over millions of years. These internal planes and natural fractures are part of the stone’s story, not flaws, and give each piece its unique character.\u003c\/p\u003e\n\u003cp\u003eOptical Calcite is often associated with clarity — both mental and energetic. It’s thought to help clear mental fog, making it a favourite for focus, decision-making, and gaining a fresh perspective when things feel muddled. Many people like working with it during journaling, studying, or moments when they want to see situations more objectively.\u003c\/p\u003e\n\u003cp\u003eEnergetically, it’s considered a gentle amplifier, helping to bring awareness to what’s already present rather than forcing change. It’s a lovely stone for reflection, insight, and quiet “aha” moments — calm, steady, and surprisingly powerful in its simplicity.\u003c\/p\u003e\n\u003ch3\u003e✧ The Pieces ✧\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eA\u003c\/strong\u003e — 117g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eB\u003c\/strong\u003e — 124g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eC\u003c\/strong\u003e — 114g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eYou will receive the exact piece selected.\u003c\/p\u003e","brand":"essence crystal boutique","offers":[{"title":"a","offer_id":56403653132636,"sku":null,"price":12.0,"currency_code":"GBP","in_stock":true},{"title":"b","offer_id":56403653165404,"sku":null,"price":12.0,"currency_code":"GBP","in_stock":true},{"title":"c","offer_id":56403653198172,"sku":null,"price":12.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/3639\/7404\/files\/20260107_115712.jpg?v=1767788026","url":"https:\/\/essencecrystalboutique.co.uk\/products\/optical-calcite-iceland-spar-freeform-blocks","provider":"essence crystal boutique","version":"1.0","type":"link"}