{"product_id":"kostovite-with-native-gold-polished-section","title":"KOSTOVITE with NATIVE GOLD  Polished Section","description":"A 2.5 cm diameter resin mounted polished block containing several grains, to 2 mm across, containing Kostovite and Native Gold from the famous Golden Mile mines at Kalgoorlie, Western Australia. Kostovite is an extremely rare copper gold telluride known from a small number of gold deposits worldwide. Like all polished sections this is designed to be viewed and studied optically, in this case with a reflected light microscope. However, polished sections like this can also be used in Scanning Electron Microscopes (SEM's) where precise chemical data can be obtained for study and identification using a microprobe. There are very few images of Kostovite available online indicating its rarity. This is certainly one for the dedicated rare species enthusiast, or for an academic institution wanting study material.","brand":"Crystal Classics","offers":[{"title":"Default Title","offer_id":46584069357743,"sku":"CC18446","price":150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/8516\/2671\/files\/CC18446.png?v=1771844563","url":"https:\/\/crystalclassics.com\/products\/kostovite-with-native-gold-polished-section","provider":"Crystal Classics","version":"1.0","type":"link"}