{"product_id":"vintage-blue-john-sterling-silver-necklace-malachite-pendant-1980-hallmark-double-sided-bleu-jaune-jewellery-jewelry","title":"Vintage Blue John Sterling Silver Necklace Malachite Pendant 1980 Hallmark Double Sided Bleu Jaune Jewellery Jewelry","description":"\u003cp\u003eDESCRIPTION: A brilliant vintage sterling silver and genuine blue john and malachite double sided pendant. The pendant is fully hallmarked for sterling silver, dating to 1980. It weighs approx. 6.16g and the size dimensions are in the latter photos. Blue john is an extremely rare mineral and can only be found in Derbyshire in the UK (not far from me), it is in fact Britain's rarest mineral.\u003cbr\u003e\u003c\/p\u003e","brand":"Opulent Antiques","offers":[{"title":"Default Title","offer_id":57229604225289,"sku":"PS14543","price":51.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0702\/6104\/7561\/files\/il_fullxfull.8318909898_m1xj.jpg?v=1785444389","url":"https:\/\/opulentantiquesstore.com\/products\/vintage-blue-john-sterling-silver-necklace-malachite-pendant-1980-hallmark-double-sided-bleu-jaune-jewellery-jewelry","provider":"Opulent Antiques","version":"1.0","type":"link"}