{"product_id":"dravite-brown-tourmaline-1","title":"Dravite brown tourmaline","description":"\u003cp\u003eDravite Brown Tourmaline From Yinnietharra Tomkap Tourmaline Mines Upper Gascoyne Shire Western Australia\u003c\/p\u003e\n\u003cp\u003eSize-\u003cbr\u003e5cm x 3.9cm x 2.6cm\u003c\/p\u003e\n\u003cp\u003eWeight -\u003cbr\u003e95g\u003c\/p\u003e\n\u003cp\u003eYou will receive the item in the photo\u003c\/p\u003e\n\u003cp\u003eDravite,commonly known as brown tourmaline,is a complex sodium-magnesium borosilicate mineral.\u003cbr\u003eCrystal system: Trigonal. It typically forms elongate, prismatic crystals with heavy vertical striations.\u003cbr\u003eRock formation: Dravite is a magnesium rich mineral. Its formation is heavy dictated by the presence of both magnesium and boron rich fluids.\u003cbr\u003eIt forms most abundantly in contact metamorphic zones where boron fluids interact with magnesium rich rocks like dolomitic marbles,calcium-silicate skarns and serpentinites.\u003cbr\u003eIt also occurs as an accessory mineral in granites and pegmatites where hydrothermal or magnetic fluids introduce boron into the surrounding host rock.\u003cbr\u003eDravite belongs to the silicates mineral class, and measures 7 on the MOHs hardness scale.\u003c\/p\u003e","brand":"Crystal and fossils","offers":[{"title":"Default Title","offer_id":58372186112387,"sku":null,"price":52.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0563\/2524\/3040\/files\/IMG-9285.heic?v=1782925924","url":"https:\/\/crystalandfossils.co.uk\/products\/dravite-brown-tourmaline-1","provider":"Crystal and fossils","version":"1.0","type":"link"}