A beautiful Coober Pedy backed 11x7mm solid opal.. gorgeous blues with a slight orange tinge shining through in natural daylight.  In the evening aqua fire is present.  A truely lovely opal set in 9ct gold and surrounded by 22 gorgeous natural Ceylon sapphires ~ ring size 🇦🇺 🇬🇧 O 1/2 🇺🇸 7 1/2