Xmas Gift - Huge Natural Opal 14K Yellow Gold Ring

Selling my personal items for going back college! Rarely seen huge piece of natural Australian Opal set with 14 K yellow gold and decorated with natural white sapphire, precious metal is hallmarked. It is not vintage, also it is not new, it is purchased in Japan with paper but paper lost, any re-test welcome. I rarely wear it, has been professionally cleaned like brand new. The opal itself roughly around 7ct, was told by the shopper in Japan, as well as the jewellery in Dublin. The natural sapphire is roughly around 0.10-- 0.15 ct, they are small anyway, but really white and sparkle. The ring itself is made with solid 14K yellow gold, and this type of work is called Wax Carving, and usually made by hands individually, which rarely seen in the modern jewellery making mass producing, also it is a copy of a masterpiece from a jewellery exhibition. True or not I can not tell, but it looks so unusual and luxury. The weight of the ring is 7.8 grams, very thick and heavy, the size of the ring is Japanese 13.5, or roughly about size M, however, because the ring is so wide, so it will be easy to expend a half or a size more, you could ask your local jeweller. The Opal itself is at top jewellery grade, full of sparkles, the colour is from light pink to red to green and a bit blue, also the sparkles is full of the gemstone without a blind spot. The back of Opal is slightly polished, which you can see a tiny bit rough surface, which also a sign of 100% natural opal. Nowadays, even in Australia, you see the layered opal everywhere, for such big size, such thickness, so rarely, if someone has lived or toured there. Make me an offer if you are interested, it will make a wonderful gift for someone really special, or just a nice reward for your self, for a tough year.