{"product_id":"vintage-9ct-gold-blue-john-ring-solid-9k-9kt-375-yellow-signet-cabochon-oval-fluorite-bleu-jaune-womens-rare-gemstone-jewelry-jewellery-1","title":"Vintage 9ct Gold Blue John Ring Solid 9k 9kt 375 Yellow Signet Cabochon Oval Fluorite Bleu Jaune Womens Rare Gemstone Jewelry Jewellery","description":"\u003cp\u003eDESCRIPTION: A lovely vintage solid 9ct gold genuine blue john ring. Blue john is an extremely rare mineral and can only be found in Derbyshire in the UK, it's in fact Britain's rarest mineral. The ring sizes at approx. UK O.5 or US 7.25 and weighs approx. 1.81g. It's fully hallmarked for 9ct gold, dating to 1988.\u003cbr\u003e\u003c\/p\u003e","brand":"Opulent Antiques","offers":[{"title":"Default Title","offer_id":56844603490569,"sku":"PS13674","price":221.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0702\/6104\/7561\/files\/il_fullxfull.7794366363_gwsh.jpg?v=1772045802","url":"https:\/\/opulentantiquesstore.com\/products\/vintage-9ct-gold-blue-john-ring-solid-9k-9kt-375-yellow-signet-cabochon-oval-fluorite-bleu-jaune-womens-rare-gemstone-jewelry-jewellery-1","provider":"Opulent Antiques","version":"1.0","type":"link"}