{"product_id":"iceland-spar-44-99","title":"Iceland Spar $44.99","description":"\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eIceland Spar is a clear, naturally formed variety of calcite known for its optical clarity and distinctive transparency. Often used in classrooms and collections to demonstrate light refraction and double imaging, this mineral is a favorite among geology students, educators, and anyone curious about the science of crystals. Its crisp, glass‑like appearance makes it an eye‑catching piece for display or hands‑on learning.\u003c\/p\u003e\n\u003cp\u003eWhy you'll love this:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTransparent calcite that clearly demonstrates optical refraction and double refraction\u003c\/li\u003e\n\u003cli\u003eSmooth, naturally cleaved surfaces highlight calcite’s crystal structure\u003c\/li\u003e\n\u003cli\u003eDurable mineral piece ideal for study, display, or classroom demonstrations\u003c\/li\u003e\n\u003cli\u003eA helpful sample for exploring crystal systems, mineral identification, and Earth science\u003c\/li\u003e\n\u003cli\u003eGreat for students, collectors, and anyone building a geology learning collection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA bright, engaging way to explore the science of light and minerals.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Howard","offers":[{"title":"Default Title","offer_id":50075465056449,"sku":null,"price":44.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0074\/0638\/7247\/files\/IcelandicSparR4499Howard_88fb966c-1026-45f2-8972-e5065703df01.png?v=1774381005","url":"https:\/\/store.smm.org\/products\/iceland-spar-44-99","provider":"The Science Museum of Minnesota","version":"1.0","type":"link"}