Vintage Sapphire Diamond and Platinum Earrings,...
A pair of vintage, late Art Deco, sapphire, diamond and platinum earrings, with graduating oval faceted sapphires, in claw settings and old-cut and...
Onyx is the parallel banded form of chalcedony. Black onyx was a beloved gem material during the Art Deco era and was commonly used to create bold and geometric colour contrasts.
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A Cartier Paris multi gemstone baton cufflink set, with interchangeable bars or batons, consisting of malachite, black onyx, coral, tiger eye and...
A French, Art Deco, black onyx, diamond, frosted rock crystal and gold dress-set, by Georges Thibault, with flat circular black onyx centres,...
A pair of contemporary black onyx and diamond drop earrings, consisting of torpedo-shaped black onyx drops, with a cut-out section through the...
A Belle Époque style Edwardian brooch, designed as two concentric circles, set with fancy cut pieces of black onyx and round old-cut diamonds, in...
A frosted rainbow moonstone and black onyx dress-set, comprising of a pair of cufflinks and three studs, with rub-over set diamonds in the centres,...
A vintage Italian black onyx and diamond dress ring, set with a square, sugar-loaf shaped, cabochon-cut black onyx, surrounded by a channel of...
An Art Deco black onyx tassel pendant necklace, comprising of multiple rows of graduating black onyx beads, hanging below a brilliant-cut diamond...
A pair of Jean Schlumberger for Tiffany & Co. black onyx and turquoise cufflinks, with turquoise studded black onyx spheres, on 18ct gold,...
A pair of lavender jade and diamond earrings, with lavender jadeite jade cabochon centres, with a flower shaped surround, with pavé set, old-cut...
A pair of Art Deco black onyx and diamond dress-set, set with baguette and old-cut diamonds mounted in white gold, with yellow gold links. In a...
A pair of black onyx, rock crystal and diamond cufflinks, with a round brilliant-cut diamond set in the centre of carved rock crystal, with a...
A pair of French, Art Deco, black onyx and ruby cufflinks, mounted in platinum, with square-cut rubies, in heavy, platinum, square settings, within...
A pair of Art Deco, oval, black onyx and diamond cufflinks, set with a central, oval piece of black onyx, with a pavé set diamond surround. Circa...
A black onyx and diamond dress set by Weingrill, mounted in 18ct yellow gold, set with black onyx and a diamond in each plate, in a square shape...
A pair of Art Deco, coral, black onyx and diamond cufflinks, with a diamond set in the centre of three, diagonally set, black onyx squares in a...
A carved rock crystal bead necklace, with black onyx rondelles, with an 18ct white gold pavé set black and white diamond ball clasp. Length...
A carved rock crystal and black onyx rondelle bead necklace, sixty-one carved rock crystal beads measuring approximately 13-14mm each, separated by...