{"product_id":"auction-win-416ddef5-3cd1-4d61-83f3-740fbeed81d1","title":"Auction Win: Cobaltoan Calcite (great color)","description":"\u003cp\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Katanga Copper Crescent, Haut-Katanga, DR Congo\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e Miniature - 3.6 × 3 × 2 cm\u003c\/p\u003e\n\u003cp\u003eCobaltoan calcite is a pink variety of calcite with the formula (Ca,Co)CO₃, where cobalt ions replace some calcium . It was originally described from the Cape Calamita Mine on Elba Island, Italy . This mineral is frequently confused with spherocobaltite due to its dark pink color .\u003cbr\u003e\u003cbr\u003eThe Katanga Copper Crescent in Haut-Katanga, DR Congo is a major mining area renowned for its immense richness in secondary copper minerals, particularly malachite, which often outcrops on the surface . This region has produced notable specimens including the best baryte crystal clusters in Congo from the Shangulowé Mine and fine turquoise crystals from Katonto Hill . Collectors value the area for its diverse copper and cobalt deposits, with over 66 valid minerals recorded across at least 12 localities within the crescent . Despite some specimens being of variable quality, the region remains a significant source for collectors seeking exceptional copper mineral specimens .\u003c\/p\u003e","brand":"Crystal Castle","offers":[{"title":"Default Title","offer_id":49033826861211,"sku":null,"price":5.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0336\/3012\/6217\/files\/2cd61873-30ce-4f8f-86b6-d5ef0f934ed9.jpg?v=1784495389","url":"https:\/\/www.overtonfamilyjewels.com\/products\/auction-win-416ddef5-3cd1-4d61-83f3-740fbeed81d1","provider":"OFJ's Crystal Castle","version":"1.0","type":"link"}