{"product_id":"natural-blue-kyanite-crystals-x-1-88-kg-lot-from-karoi-zimbabwe","title":"Natural Blue Kyanite Crystals x 1,88 Kg Lot From Karoi, Zimbabwe","description":"\u003cp\u003e\u003cstrong\u003eA NOTE FROM NICK\u003c\/strong\u003e\u003cbr\u003eA 1,88 Kg lot of selected and cleaned natural blue Kyanite crystals from Karoi, Zimbabwe. Most crystals from this location fluoresce a pink to red colour under a UV light and are grey to blue, but these are a good blue to deep blue and have translucence and striated sides with black Biotite Mica on them. They come from the pegmatites surrounding the Karoi area and are not always easily available.\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 = 30 - 65 mm\u003c\/p\u003e","brand":"KYANITE","offers":[{"title":"Default Title","offer_id":50854754746561,"sku":"189-997-261029BM","price":2128.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2066\/6451\/files\/189997_9.jpg?v=1793881667","url":"https:\/\/www.toprocks.com\/products\/natural-blue-kyanite-crystals-x-1-88-kg-lot-from-karoi-zimbabwe","provider":"Toprock Gemstones and Minerals ","version":"1.0","type":"link"}