AN OPAL AUSTRALIA BROOCH designed as the outline of Australia, set to the centre with a fancy shaped

NO RESERVE - AN OPAL CHARM / PENDANT in 10ct yellow gold, designed as Australia, set to the centre with a cabochon cut opal, stamped 10K, 1.6cm, 0.8g. 

13.2ct Australian Koroit Opal Gemstone. Teardrop, pear shaped cabochon with a fantastic pattern. Koroit fields, Queensland Australia origin gemstone. Ready to be set into a gorgeous pendant. 18 1/2 X

Fancy shaped reticulated brooch set with a citrine and seed pearls. Marked Comus 1917. Measures 1 3/16 length.

An early 20th century opal insect brooch, the insect set with vari shaped cabochon opals, the eyes set with circular cut rubies, 7cm long

AN ANTIQUE OPAL, EMERALD AND RUBY BROOCH designed as a bow set with a square step cut emerald in a border of cushion cut rubies, accented by cabochon opals, suspending a swag chain with a drop set wit

ANTIQUE BELLE EPOQUE OPAL AND DIAMOND BROOCH, Set with a large marquise shaped opal of approx. 28 x 9.7 mm. Surrounded with bright and lively diamonds. L. 4 cm. 10.1 grams.

Vintage White Gold, Diamond, and Gem-Set Brooch designed in a shaped lozenge form with allover filigree decoration, set with old European and old single cut diamonds weighing approximately .26 total c

A CULTURED PEARL AND DIAMOND EN TREMBLANT BROOCH, designed as a flower head with pink cultured pearl petals and an en tremblant stamen set with fancy grey-brown round brilliant-cut diamonds, with fanc

AN ANTIQUE OPAL CRESCENT MOON BROOCH in yellow gold, designed as a crescent moon set with a row of graduated cabochon opals, no assay marks, 2.7cm, 3.1g. 

A collection of fire opal jewellery including a 9ct gold round and oval-cut fire opal bracelet; a 9ct gold pear-shaped fire opal bracelet; a 9ct gold fire opal brooch of circular outline, a pair of 9c

A white gold diamond bow and ribbon brooch, A white gold diamond bow and ribbon brooch, designed as a stylised bow and ribbon, with a round brilliant cut diamond millegrain set to the centre, to a bla

Handmade 18K Gold Floral Spray Form Brooch, set with (10) oval shaped jelly opals, 6.3 dwt, 1" high, 2 1/8" wide. Fine condition.

A gilt metal bar brooch set with central amethyst coloured heart shaped stone to centre flanked by two white stones. Approx. 1 3/4" wide

Turquoise, 18k Yellow Gold Butterfly Brooch. Designed as a butterfly, the body featuring one oval shaped turquoise cabochon, the wings accented by six round shaped turquoise cabochons, set in an 18k y

Two items of late 19th century tortoiseshell pique jewellery. The brooch designed as a circular outline, the geometric patterns to the hexagonal-shape raised centre, together with a pair of ear pendan

A GARNET AND DIAMOND BROOCH, of shield form, the centre set with a kite-shaped smooth garnet, with garnet cabochons and diamond accents. 2.8cm by 2.4cm

Oval shaped fire opal brooch surrounded by filigree set in sterling silver.

AN ANTIQUE OPAL AND DIAMOND BROOCH in yellow gold and silver, formed of a trio of flower motifs, each set at the centre with a round cabochon opal, accented in the petals by rose cut diamonds, unmarke

A diamond, yellow diamond, and platinum rose brooch designed as a flower with articulating petals, centering a 0.91-carat pear-shaped yellow diamond, pavé-set throughout with round brilliant and

ANTIQUE VICTORIAN DIAMOND, ENAMEL PEARL AND PINK SAPPHIRE BOW BROOCH, designed as a knotted bow, set with pearls and accentuated with blue enamel. To the centre suspending a pearl diamond and pear sha

10k white and yellow gold pin brooch, set with a central round shaped cabochon opal, approximate total weight of opal 1.57ct, flanked by four old European cut diamonds, approximate total weight of dia

AN ANTIQUE DIAMOND CRESCENT MOON BROOCH in yellow gold, designed as a crescent moon with a flower at the centre, set with an old European brilliant cut diamond, no assay marks, 2.4cm, 1.9g.

Two gem-set bee brooches. Each designed as a graduated opal cabochon and circular-cut diamond double cluster body, with circular-shape ruby eyes and diamond wings. Estimated total diamond weight 0.70c

Two Scottish pebble mixed stone brooches, the first of oval outline designed as a saltire and set with cornelian banded agate, bloodstone, green and brown agates in a loose twist mount, length 6.2cm;