{"product_id":"untitled-oct2_17-39-08","title":"Andamooka Opal Necklace","description":"\u003cp\u003eThis opal Displau’s a beautiful rang of colours from electric green to orange to yellow, it’s a beautiful organic shape with a sterling silver chain that has 3 adjustable sizes, could also possibly be worn in the opposite way to display more blue and green. Andamooka is located N\/W of Adelaide . This opal field produces a variety of opal types including limestone impregnated with precious opal known in the jewellery trade as matrix . This limestone is treated with sugar and sulphuric acid to make a dark based opal . The sugar solution impregnates into the slightly porous opal and carbonises to a deep black when soaked in sulphuric acid . Andamooka matrix opal is somewhat similar to natural black opal in appearance depending on the amount and quality of opal in the limestone . This opal can cut stunning stones that are far more affordable than untreated black opal\u003c\/p\u003e","brand":"Rare and Beautiful","offers":[{"title":"Default Title","offer_id":50598656409665,"sku":null,"price":328.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0244\/2393\/files\/2EA03A50-F64A-4F97-845E-DB89D38A9871.jpg?v=1790926957","url":"https:\/\/rareandbeautiful.com.au\/products\/untitled-oct2_17-39-08","provider":"Rare and Beautiful","version":"1.0","type":"link"}