More ideas from otto
An unusual opal and diamond octopus brooch - i think the use of "unusual" is overkind

An unusual opal and diamond octopus brooch circa 1955 entirely carved from a single opal, the eyes set with cabochon emeralds, the glistening tentacles with sucker detail, entwined with brilliant-cut diamond seaweed

Australian Opal Diamond Brooch ,This exquisite flower brooch design features seven australian opals weighing 19.78 cts. total. The stem and leaves are encrusted with pave diamonds. In the center of the flower are three oval and two round brilliant diamonds. Handmade 18k white gold setting.

Australian Opal Diamond Brooch features seven australian opals weighing cts. The stem and leaves are encrusted with pave diamonds. In the center of the flower are three oval and two round brilliant diamonds.

A Victorian opal and diamond butterfly brooch with carved opal wings on a pierced and engraved gold back with old brilliant-cut diamond-set body and ruby head, the diamonds weighing approximately 0.80 carats, circa 1880,

A Victorian opal and diamond butterfly brooch with carved opal wings, engraved gold back with brilliant-cut diamond-set body and ruby head, circa

Unique Genuine Onyx & Carved Opal Cameo Pendant - 14k Yellow Gold Vintage 4.9g | eBay

Unique Genuine Onyx & Carved Opal Cameo Pendant - 14k Yellow Gold Vintage 4.9g | eBay

Art Nouveau brooch-pendant. Set in yellow gold with plique-à-jour, opal, diamond and pearl. This brooch is not clearly marked, but there are brooches in this same style from the American firm Krementz & Company.

Art Nouveau brooch pendant, set in yellow gold with plique-à-jour, opal, diamond and pearl, there are brooches in this same style from the American firm Krementz & Company.