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These items are not for sale and the descriptions, images and prices are for reference purposes only.

A 9ct gold gemset enhancer, centring a cultured freshwater pearl surrounded by onyx and 4 round brilliant cut diamonds

An antique mourning choker with diamond, onyx and gold clasp, the six strand necklace comprising faceted black and brown glass beads to an oval clasp set with onyx and overlaid with a diamond set flower, finished with a gold and black enamel frame, total l

An aquamarine and diamond pendant necklace, the rectangular cut aquamarine of 7.11cts suspended from an Art Deco style bale set with round brilliant cut diamonds and onyx, to a fine chain, all mounted in 18ct white gold. Condition: mixed cut aquamarine. St

18ct gold, emerald and onyx 'Panthere' necklace, Cartier, designed as a series of brick links decorated to the front with a resting panther with circular-cut emerald eyes and onyx nose, gross weight approximately 93.08 grams, circumference approxim

Matinee length turquoise and onyx necklace, with other semiprecious stones

Facetted onyx and ivory necklace, (ivory from 1920s)

A silver onyx and marcasite pendant necklace, oval plaque pendant, 7 x 4.5 cm to foxtail chain.

A cultured pearl necklace, 8, 8.3mm round white pearls attached with an onyx and zirconia silver tassel enhancer.

Onyx and silver bead necklace, Tiffany & Co., designed as a line of forty-eight uniform round polished onyx beads measuring approximately 10.00mm alternating between 5.80mm polished silver beads completed by a silver clasp, length approximately 770mm, sign

A garnet, Rhodochrosite and onyx necklace, faceted onyx and garnet beads strung to a carved rhodochrosite flower pendant.

An 18ct gold pearl diamond and stone set enhancer, centring a 14.5mm mabe pearl flanked by 12 round brilliant cut diamonds and onyx highlights on a hinged bail set with 7 graduated round brilliant cut diamonds. Wt. 10.6g

Facetted onyx necklace with cross, with another marked Une Ligne Paris

A 22ct gold necklace; strung with onyx beads and pendant drop. Length 67 cm. Wt. 34.5g.

Silver, marcasite and onyx necklace

An onyx set silver Coller and earrings. Sterling silver, the collar made as a 1960's inspired fixed panel of U shape, swirled silver work throughout frames a single oval cabochon piece of onyx, connecting at sides to two elongated tubes of silver merging t

18ct gold, coral and onyx necklace, Van Cleef & Arpels, of toi et moi design comprising of a line of open work twin hearts each embellished with a coral or onyx plaque framed by a polished gold surround between rope link connectors completed by a parrot cl

Onyx bead necklace, Tiffany & Co., designed as a line of thirty-seven uniform round polished onyx beads measuring approximately 10.50mm completed by an open work elliptical silver clasp, length approximately 400mm, signed T & Co for Tiffany & Co.

An Art Deco style jadeite and diamond pendant, the tear drop shaped pierced jadeite plaque surmounted by a geometric panel set with diamonds, onyx, coral and ruby, suspended from a trace chain, all in 18ct white gold, total length 445mm.

A Regitze necklace by Georg Jensen, styled in sterling silver and onyx, total length 430mm

An Art Deco style diamond and onyx pendant, of geometric design, set throughout with round brilliant and rose cut diamonds and having an onyx panel, suspended on a trace chain, mounted in 18ct white gold, total length 450mm

An onyx and pearl Tiffany & Co tassel necklace, sterling silver, from the great Gatsby Range in the Ziegfeld collection, presented as a long bead necklace of muff chain length, round black onyx beads throughout, interspersed at lower section with six white

An onyx and pearl daisy pendant on chain from Tiffany & Co, sterling silver, from the great Gatsby Range in the Ziegfeld collection, crafted as an elongated cushion shaped panel of pierced silver work, set with a central onyx panel, silver bead work termin

Two strands of beads, one strung as a multi stone set hardstone of varied shape, colour and facet style and silver necklace, featuring additionally nut like beads of deep brown colour, the second of long length, featuring faceted smoky quartz beads with la

Matinee length onyx bead necklace, set with coral multi bead ball

A polished and matt onyx bead necklace with 'cinnabar' spacing bead

An Art Deco style onyx, emerald and diamond necklace, having a hexagonal onyx panel centrally set with an oval emerald cut en cabochon overlaid with millegrain round brilliant cut diamonds, to geometric diamond set lugs, suspended on an emerald bead, cycli