An unusual 18ct gold and platinum Art Deco ring that was made in the 1920s. It has been set with a good black opal that displays flashes of red. Unlike ordinary opals, black opals have carbon and iron oxide trace elements present, which cause the unusual darkness of the stone. Because of their dark body tone, the rainbow colours in a black opal stand out much better than lighter opals.
\nThis vibrancy of colour makes black opal the most valuable form of all opals. Often a black opal will have a natural layer of potch (colourless opal) left on the back of the stone, which can give the stone an extra darkness and vibrancy of colour. The darker this potch backing is, the darker the body tone, which usually makes for greater vibrancy of colour and a higher value black opal. The opal in this ring has a dark potch on the reverse hence the extra colour vibrancy. It would most likely have been sourced in Lightning Ridge in New South Wales, Australia. It is flanked by a diamond on either side. <\/p>\n","protected":false},"excerpt":{"rendered":"
An unusual 18ct gold and platinum Art Deco ring that was made in the 1920s. It has been set with a good black opal that displays flashes of red. Unlike ordinary opals, black opals have carbon and iron oxide trace elements present, which cause the unusual darkness of the stone. Because of their dark body […]<\/p>\n","protected":false},"featured_media":1000000319788,"template":"","meta":{"_acf_changed":false},"product_cat":[5308],"product_tag":[],"yoast_head":"\n