The stone cutter has taken special trouble with this stone so as to realise the 3D circle of translucent opal and coloured inclusions. Also has a beautiful green flash. Undrilled dark matrix opal from Koroit.

• 18.5ct
• 1 1/4 inch   |   30mm long
• 9/16 inch   |   14mm wide
• 5/16 inch   |   7mm thick