{"product_id":"natural-blue-kyanite-crystals-x-2-1-kg-lot-from-karoi-zimbabwe-1","title":"Natural Blue Kyanite Crystals x 2,1 Kg Lot From Karoi, Zimbabwe","description":"\u003cp\u003e\u003cstrong\u003eA NOTE FROM NICK\u003c\/strong\u003e\u003cbr\u003eA 2,1 Kg lot of selected and cleaned fluorescent blue Kyanite crystals. These are nice selected bright blue to deep blue, some semi-translucent single crystals with striated edges and shiny black Biotite Mica. The Kyanite crystals from the Karoi pegmatites are grey-blue. These are distinctly very blue.\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 = 37 - 74 mm\u003c\/p\u003e","brand":"KYANITE","offers":[{"title":"Default Title","offer_id":50898624872641,"sku":"190-246-261105BM","price":2380.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2066\/6451\/files\/190246_4.jpg?v=1794475951","url":"https:\/\/www.toprocks.com\/products\/natural-blue-kyanite-crystals-x-2-1-kg-lot-from-karoi-zimbabwe-1","provider":"Toprock Gemstones and Minerals ","version":"1.0","type":"link"}