{"product_id":"dioptase-18","title":"DIOPTASE","description":"This fine small cabinet specimen of deep emerald green Dioptase is from its type locality at Altyn-Tyube in Karagandy Province, Kazakhstan.  The Dioptase forms individual crystals of up to and just over 1 cm long while the majority of crystals are between 8 to 10 mm long.  They richly cover a 0.5 to 1 cm thick plate of crystalline Calcite, which varies from colourless and milky white to a light fawn grey.  A fair amount of the Calcite has a glossy satin lustre with an associated smooth glassy texture, I believe the result of acid etching to expose the Dioptase.  The Dioptase crystals are a complex mixture of transparent and translucent zones, often reflecting incident light which produces an internal sparkle or glow.\n","brand":"Crystal Classics","offers":[{"title":"Default Title","offer_id":46549612265647,"sku":"CC30465","price":1500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/8516\/2671\/files\/CC30465.png?v=1770631469","url":"https:\/\/crystalclassics.com\/products\/dioptase-18","provider":"Crystal Classics","version":"1.0","type":"link"}