{"product_id":"15-72ct-black-oval-gold-quartz-cabochon-grail","title":"15.72ct Black Oval Gold Quartz Cabochon GRAIL","description":"\u003cp\u003e\u003cspan style=\"color: rgb(255, 128, 0);\"\u003e\u003cstrong\u003e\u003cu\u003eOverview:\u003c\/u\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eRARE BLACK Gold Quartz cab from the renowned Sheep Ranch Mine\u003c\/p\u003e\n\u003cp\u003eOval cut - 15.72ct - Perfect Ring \/ Pendant Stone. \u003c\/p\u003e\n\u003cp\u003eVery rich - Tested between 22-23k \u003c\/p\u003e\n\u003cp\u003eFINEST \/ Highest Grade Black gold quartz cab.\u003c\/p\u003e\n\u003cp\u003eCurrently in Natural form - can be ultra polished for jewellery setting.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eLocality: Sheep Ranch Mine, Calaveras County, California USA\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eSUPER RARE - Mine closed in 1942!\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe Sheep Ranch Mine is a silver and gold mine located in Calaveras county, California at an elevation of 2349 feet.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe Sheep Ranch Mine is considered the most productive gold mine of the East Gold Belt having produced in excess of $7,000,000 in native gold between its opening in the 1860s until final closure in 1942. Ore generally averaged 0.5-0.6 ounces per ton. The most prolific period in the mine's history was between 1877 and 1893 when over 400,000 tons of ore worth over $4,000,000 was produced.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eA genuine collector's piece that captures gold quartz in its most authentic form, this ultra-rare specimen is expertly finished and ready for immediate jewellery setting. Each cabochon is entirely unique, offering discerning craftspeople and collectors an unparalleled opportunity to work with a truly singular natural treasure.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 128, 0);\"\u003e\u003cstrong\u003e\u003cu\u003eSpecifications:\u003c\/u\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eAuthentic 100% Natural Black Gold Quartz from Sheep Ranch Mine, California\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 15.72 carats \u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Oval 22.0mm x 18.0mm x 3.5mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":57856601784645,"sku":null,"price":750.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/2355\/8725\/files\/IMG_20260504_202656.jpg?v=1777926106","url":"https:\/\/griffinore.com\/products\/15-72ct-black-oval-gold-quartz-cabochon-grail","provider":"GriffinOre","version":"1.0","type":"link"}