{"product_id":"3-70ct-cobalt-blue-spinel-gemstone-rare-deep-blue-gem","title":"3.70ct Cobalt Blue Spinel Gemstone: Rare Deep Blue Gem","description":"3.70ct Cobalt Blue Spinel – Rare Natural Gemstone, Deep Saturation\n\n⸻\n\n2. Description\n\nMineral:\nSpinel – Cobalt-bearing variety\n\nDescription:\nThis 3.70 carat cobalt spinel exhibits an intense and vivid blue hue, characteristic of true cobalt-bearing spinels—among the rarest and most sought-after in the gem world. Its rich saturation is balanced by excellent clarity and a well-executed cut that showcases the stone’s brilliance. The deep, almost electric tone of this gem sets it apart from typical blue spinels, making it ideal for high-end bespoke jewelry or a rare gem investment. Cobalt spinels are highly prized for their natural color and rarity, especially when untreated.\n\nWeight and Dimensions:\n\t•\tWeight: 3.70 carats | 0.74 grams | 0.026 ounces\n\t•\tDimensions: 10.5x8x6mm\n\n\nLocality:\n(Please confirm origin — common sources include Sri Lanka, Vietnam, and Tanzania.)\n\n⸻\n\n\n\ncobalt spinel\nblue spinel gem\nnatural spinel\nrare spinel\nloose spinel\nuntreated gemstone\ncollector spinel\ndeep blue gem\nhigh end gem\nfine spinel stone\nsapphire alternative\nfaceted spinel\ngem for jewelry\n\n\n\ncobalt spinel,\nblue spinel gem,\nnatural spinel,\nrare spinel,\nloose spinel,\nuntreated gemstone,\ncollector spinel,\ndeep blue gem,\nhigh end gem,\nfine spinel stone,\nsapphire alternative,\nfaceted spinel,\ngem for jewelry,\nAAA Spinel","brand":"Faran Gems","offers":[{"title":"Default Title","offer_id":56600273682737,"sku":null,"price":1550.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0923\/5516\/6513\/files\/742774fa-il_fullxfull.7130547023_rixm.jpg?v=1791040431","url":"https:\/\/farangems.com\/products\/3-70ct-cobalt-blue-spinel-gemstone-rare-deep-blue-gem","provider":"Faran Gems","version":"1.0","type":"link"}