{"product_id":"yellow-rainbow-optical-calcite-specimen-from-madagascar-99d3","title":"Yellow Rainbow Optical Calcite Specimen from Madagascar","description":"\u003cp\u003e\u003cspan\u003eOptical Calcite from Madagascar is prized for its exceptional clarity and striking optical effects. When light passes through these transparent calcite crystals, the crystal’s natural double refraction can create vivid \u003c\/span\u003e\u003cspan\u003erainbows, flashes, and colorful bands\u003c\/span\u003e\u003cspan\u003e that shift as the specimen is viewed from different angles. These rainbow effects are especially beautiful against a light background or when illuminated, making Madagascar Optical Calcite highly sought after by collectors for both its optical properties and natural beauty. There may be a minor ding or two on some pieces. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eYou will receive this exact piece. This one has a faint yellow hue, brilliant rainbows and exceptional clarity. \u003cbr\u003eSize: 37 x 23 x 12 mm. 28 grams.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"OLD EARTH MINERALS","offers":[{"title":"Default Title","offer_id":40928997572737,"sku":"16004","price":10.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/9433\/1777\/files\/1B8ED89C-9FD1-4A59-9446-0A25685089F0.jpg?v=1790002507","url":"https:\/\/oldearthminerals.com\/products\/yellow-rainbow-optical-calcite-specimen-from-madagascar-99d3","provider":"OLD EARTH MINERALS","version":"1.0","type":"link"}