{"product_id":"natural-large-black-tourmaline-specimens-in-quartz-x-2-from-zambia","title":"Natural Large Black Tourmaline Specimens in Quartz  x 2 From Zambia","description":"\u003cp\u003e\u003cb\u003eA NOTE FROM NICK\u003cbr\u003e\u003c\/b\u003eA large pair of natural Black Tourmaline in Quartz from Zambia with jet black Schorl needles and the clear to milky Quartz. \u003c\/p\u003e\n\u003cp\u003e\u003cb\u003ePRODUCT DESCRIPTION \u003cbr\u003e\u003c\/b\u003e\u003cstrong\u003eNatural Black Tourmaline in Quartz Specimens Zambia\u003c\/strong\u003e\u003cbr\u003eZambian Black Tourmaline in Quartz, known mineralogically as Schorl, is a complex iron-rich Boron Silicate that forms in granitic pegmatites and metamorphic environments, where its strongly striated prismatic crystals develop alongside and within growing Quartz bodies. In these Zambian specimens, Schorl crystals have been captured within the Quartz matrix during simultaneous crystallisation, producing vivid black needle-like to prismatic inclusions suspended in clear to milky white Quartz host rock. Zambia's Precambrian metamorphic and pegmatite geology provides ideal conditions for this Tourmaline-Quartz association, consistently producing specimens with well-defined Schorl crystals and good contrast against the lighter Quartz matrix. The sharp visual contrast between the opaque jet black Tourmaline and the translucent Quartz host makes these highly attractive both as display specimens and as lapidary material.\u003c\/p\u003e\n\u003cp style=\"line-height: normal;\" class=\"MsoNormal\"\u003e\u003cb\u003eASSOCIATED MINERALS \u003cbr\u003e\u003c\/b\u003eSchorl, Quartz, Black Tourmaline\u003cbr\u003e\u003c\/p\u003e\n\u003cp style=\"line-height: normal;\" class=\"MsoNormal\"\u003e\u003cb\u003eASSOCIATED FEATURES \u003cbr\u003e\u003c\/b\u003eTrigonal, Prismatic, Striated, Vitreous, Translucent, Acicular\u003cbr\u003e\u003c\/p\u003e\n\u003cp style=\"line-height: normal;\" class=\"MsoNormal\"\u003e\u003cb\u003eASSOCIATED COLOURS \u003cbr\u003e\u003c\/b\u003eBlack, White, Clear, Grey\u003cbr\u003e\u003c\/p\u003e\n\u003cp style=\"line-height: normal;\" class=\"MsoNormal\"\u003e\u003cb\u003eMOHS HARDNESS SCALE\u003ci\u003e\u003cbr\u003e\u003c\/i\u003e\u003c\/b\u003e7 to 7.5\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003ePRODUCT DATA \u003cbr\u003e\u003c\/b\u003eLocality = Zambia\u003cbr\u003eGrade = Medium Grade\u003cspan style=\"mso-spacerun: yes;\"\u003e                      \u003c\/span\u003e\u003cbr\u003eSize = 147 - 175 mm\u003c\/p\u003e","brand":"TOURMALINE - Quartz","offers":[{"title":"Default Title","offer_id":50658369470657,"sku":"188-972-260928BM","price":1932.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2066\/6451\/files\/188972_2.jpg?v=1790866330","url":"https:\/\/www.toprocks.com\/products\/natural-large-black-tourmaline-specimens-in-quartz-x-2-from-zambia","provider":"Toprock Gemstones and Minerals ","version":"1.0","type":"link"}