Explore Art Deco Jewelry, Opal Jewelry and more!

Art Deco Black Opal Pendant. Black opal, diamond, and demantoid garnet pendant mounted in platinum. American, 1925.

1925 Art Deco Pendant: Black opal, diamond, and demantoid garnet mounted in platinum, American.

OPAL AND DIAMOND CLIP, France, ca. 1925. Platinum. Decorative, geometrically open-worked clip brooch, the centre set with 1 oval black opal of ca. 8.00 ct and set throughout with 107 single-cut diamonds weighing ca. 2.40 ct. Clip in white gold   - by Koller Auctions

OPAL AND DIAMOND CLIP, France, ca. Decorative, geometrically open-worked clip brooch, the centre set with 1 oval black opal of ca. ct and set throughout with 107 single-cut diamonds weighing ca. Clip in white gold - by Koller Auctions

Stunning platinum set fine quality Edwardian diamond and black opal boxed pendant 1910c

Antique Necklace made by John Joseph Pendants - platinum set fine quality Edwardian diamond and black opal boxed pendant stunning

A Black Opal and Diamond Brooch  Centering an oval black opal measuring 19.45 x 13.50 x 5.50 mm, amid trailing baguette-cut, marquise-cut and pear-shaped diamond leaves, hidden bail to the reverse, mounted in platinum

A Black Opal and Diamond Brooch Centering an oval black opal measuring x x mm, amid trailing baguette-cut, marquise-cut and pear-shaped diamond leaves, hidden bail to the reverse, mounted in platinum

BLACK OPAL AND DIAMOND RING, CIRCA 1920.  The oval-shaped black opal measuring approximately 20.5 by 11.2 by 4.9 mm., the sides accented with buckle motifs set with single-cut and baguette diamonds, mounted in platinum, size 7¾.

Black opal and diamond ring, circa 1920 - Sotheby's. The oval-shaped black opal measuring approximately by by mm., the sides accented with buckle motifs set with single-cut and baguette diamonds, mounted in platinum, size

Art Deco Platinum, Black Opal, and Diamond Ring, set with an oval cabochon black opal measuring approx. 13.20 x 10.70 x 3.40 mm, framed by single-cut diamond melee, millegrain and engraved accents, size 5 1/2, maker's mark.

Art Deco Platinum, Black Opal, and Diamond Ring, set with an oval cabochon black opal

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