{"product_id":"double-terminated-calcite","title":"Double Terminated Calcite","description":"\u003cp\u003e~Measurement (H)x(W)x(D) : 7.4x3.6x3.2cm\u003cbr\u003e~Locality : Gralex Quarry, Mont-sur-Marchienne Charleroi, Hainaut, Belgium\u003c\/p\u003e\u003cp\u003eA single amber calcite crystal, terminated at both ends and free of matrix, mounted on a clear acrylic stand with a black name plate. The upper end is a sharp scalenohedral point in the dogtooth habit, while the lower end tapers to a blunter, more rounded finish. The body is translucent with a glassy lustre across the prism faces, and the warm amber deepens a little toward the centre.\u003c\/p\u003e\u003cp\u003eA paler core carries fine growth lines and what looks like a small phantom crystal suspended inside the body, surrounded by wispy iron stained veils. A few small white bladed crystals sit on the cream calcite at the lower edge.\u003c\/p\u003e\u003cp\u003eCalcite is calcium carbonate, CaCO\u003csub\u003e3\u003c\/sub\u003e, trigonal, soft at Mohs 3, with perfect cleavage in three directions. The scalenohedral habit gives the pointed dogtooth form, and the amber colour is generally put down to traces of iron in the carbonate. The Gralex Quarry works limestone in the Hainaut basin near Charleroi, the same ground that carried the Belgian coal seams.\u003c\/p\u003e\u003cp\u003eThe combination of Mohs 3 and cleavage in three directions makes this a soft crystal that will part cleanly if dropped or knocked. Lift it by the stand.\u003c\/p\u003e\u003cp data-ga-exact=\"1\" style=\"margin:0 0 12px;padding:10px 14px;background:#f6f1e7;border-left:3px solid #c9a84c;border-radius:4px;font-size:0.95em;\"\u003e\u003cstrong\u003eOne of a kind.\u003c\/strong\u003e The specimen pictured is the exact piece you will receive.\u003c\/p\u003e","brand":"Gleamaura","offers":[{"title":"Default Title","offer_id":43624877883598,"sku":"25304","price":1500.0,"currency_code":"MYR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0577\/9714\/8878\/files\/dba7d662353bf1b880b0af6e8905d75a.jpg?v=1784870568","url":"https:\/\/gleamaura.com\/products\/double-terminated-calcite","provider":"Gleamaura","version":"1.0","type":"link"}