{"product_id":"natural-blue-kyanite-crystals-x-2-6-kg-lot-from-karoi-zimbabwe","title":"Natural Blue Kyanite Crystals x 2,6 Kg Lot From Karoi, Zimbabwe","description":"\u003cp\u003e\u003cstrong\u003eA NOTE FROM NICK\u003c\/strong\u003e\u003cbr\u003eA 2,6 kg lot of selected single blue fluorescent Kyanite crystals. Most of the Kyanite crystals from the Karoi pegmatites are grey to blue. These have been picked and washed and they are a good blue to dark blue colour with striated sides and black Biotite Mica on them.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePRODUCT DESCRIPTION\u003c\/strong\u003e\u003cbr\u003eKyanite is an aluminium silicate mineral that forms in high-pressure metamorphic rocks. It forms long, flat, blade-like crystals in light to deep blue, with a glassy to pearly lustre, and some pieces are fluorescent under UV light. It has a Mohs hardness of 4.5 to 7, softer along the length of the blade than across it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePRODUCT DATA\u003c\/strong\u003e\u003cbr\u003eLocality = Karoi, Zimbabwe\u003cbr\u003eGrade = Good to A Grade\u003cbr\u003eSize = 31 - 50 mm\u003c\/p\u003e","brand":"KYANITE","offers":[{"title":"Default Title","offer_id":50896932700353,"sku":"190-212-261105BM","price":2912.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2066\/6451\/files\/190212_6.jpg?v=1794388716","url":"https:\/\/www.toprocks.com\/products\/natural-blue-kyanite-crystals-x-2-6-kg-lot-from-karoi-zimbabwe","provider":"Toprock Gemstones and Minerals ","version":"1.0","type":"link"}