{"product_id":"quartz-and-sphalerite","title":"QUARTZ and SPHALERITE","description":"Excellent, well-formed crystals of lustrous black Sphalerite with gemmy colourless Quartz crystals, from Gyudyurska mine in Bulgaria.  Sharply developed tetrahedral crystals of Sphalerite measure to 2.1 cm; all with a brilliant metallic lustre and gently stepped triangular growth patterns that gradually diminish towards their centres.  This is a very pleasing specimen of such a common mineral, probably showing off Sphalerite to its absolute best advantage.","brand":"Crystal Classics","offers":[{"title":"Default Title","offer_id":46540866453679,"sku":"CC6798","price":1300.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/8516\/2671\/files\/CC6798.png?v=1770208717","url":"https:\/\/crystalclassics.com\/products\/quartz-and-sphalerite","provider":"Crystal Classics","version":"1.0","type":"link"}