This is a captivating picture opal from Koroit in Australia. To me it looks like a Mother carrying a Papoose. The beautiful green and blue veins of gem opal are electric, and the hard matrix looks like fine milk chocolate with a superb glossy finish.
This stone has a high, slightly off centre dome which follows the opal pattern. It measures 31x22x9.5mm and weighs 65.40 carats, so it would make a sensational focal stone for a pendant or necklace.
One-of-a-kind old stock from my personal collection. They don't find opals like these any more. A very evocative piece.