AN EARLY 20TH CENTURY OPAL AND DIAMOND NECKLACE, round

A LATE 19TH / EARLY 20TH CENTURY BLACK OPAL AND DIAMOND NECKLACE graduated oval black opals suspended from diamond-set knife-edge bars to black opal and diamond swag links, to a diamond-set double bar

This is an antique 14K gold pendant necklace dating to the early 20th century. The pendant features a large prong set opal cabochon with vibrant green, blue, and red fire. Accented by three full cut d

AN ANTIQUE OPAL AND DIAMOND RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, set with three cabochon opals, accented by round cut diamonds, stamped 18CT & PT, size L / 5.75, 2.7g.

AN EARLY 20TH CENTURY DIAMOND PENDANT NECKLACE The fine cable-link chain leading to a graduated row of old brilliant-cut diamonds, suspending a pierced drop with foliate detailing, similarly-set with

AN EARLY 20TH CENTURY OPAL AND DIAMOND BROOCH / PENDANT a cluster of heart-cut opals within an openwork frame of further opals and eight-cut diamonds. Estimated total diamond weight 0.40ct, 4cm by 2.5

Early 20th Century Diamond Floral Necklace 14K Rose and Yellow Gold. Exquisite five piece, leaves and flower connected by 14k rose gold snake chain. •Hallmarked 14K. •Hand Signed Sandy Lance

Three late Victorian to early 20th century gold gem-set rings. To include an early 20th century opal and diamond three-stone ring, a late Victorian split pearl enamel ring, together with one further e

An early 20th century gold, opal and diamond cluster ring. The heart-shape opal cabochon, with old-cut diamond surround. Estimated total diamond weight 0.45ct. Ring size N. Weight 3.6gms.

An early 20th century gold opal and diamond ring. The oval opal line, with old-cut diamond double spacers. Estimated total diamond weight 0.25ct. Ring size J1/2. Weight 3.9gms. Overall condition good.

An early 20th century 18ct gold opal and diamond three-stone ring. The graduated oval opal cabochon line, with old-cut diamond double spacers. Estimated total diamond weight 0.10ct. Ring size L1/2. We

An early 20th century 18ct gold opal and diamond ring. The graduated oval opal cabochon line, with old-cut diamond line spacers and tapered shoulders. Hallmarks for Birmingham. Ring size Q1/2. Weight

An early 20th century 18ct gold opal and diamond ring. The oval opal cabochon, to the single-cut diamond and circular opal cabochon sides. Weight 3.2gms.

AN EARLY 20TH CENTURY CONVERTIBLE DIAMOND FLORAL TIARA/NECKLACE CIRCA 1910With seven graduated old mine cut diamond set gold backed silver flower heads, with screw fittings verso, one later, with rose

Three gold gem-set rings. To include an early 20th century 18ct gold opal and diamond dress ring, a 9ct gold garnet band ring, together with one further ring. One AF. Hallmarks for gold, one partially

AN EARLY 20TH CENTURY EMERALD AND DIAMOND NÉGLIGÉE PENDANT NECKLACE two old pear-cut diamonds within borders of calibré-cut emeralds, suspended from trace chains to a rose-cut diamond h

PEARL AND DIAMOND NECKLACE, EARLY 20TH CENTURY in yellow gold, comprising a single row of graduated pearls ranging 5.5mm to 2.5mm, the clasp set with a further pearl within a borer of rose cut diamond

SIGNED TIFFANY & CO. ART DECO PLATINUM, DIAMOND AND SAPPHIRE LOW DOME RING, early 20th century. Old European cut round diamond weighing approx 1.00 ct. Centered by two lines of six calibré-cut sapp

An early 20th century gold, opal cabochon and old-cut diamond cluster ring, estimated total diamond weight 0.80ct, I-J colour, SI clarity, opal measures approximately 13.5 by 11 by 3.9mm, ring size S,

Antique Early 20th Century Yellow & White Gold, Diamond, & Opal Cameo Brooch. Circa 1900. A rare large hand carved opal cameo of Floral in a border of old mine cut diamonds. Approximately 1.65 carats.

An early 20th century 15ct gold opal and split pearl necklace. The circular opal cabochon fringe, suspended from a scrolling foliate split pearl and circular opal cabochon tapered line, with belcher-l

AN EARLY 20TH CENTURY MOONSTONE AND DIAMOND CLUSTER RING a round moonstone within a milgrain boder of old-cut diamonds. Estimated total diamond weight 0.50ct, French gold marks, ring size M, 2.3 grams

A composite early 20th century gold diamond and gem-set negligee necklace. Designed as two goldstone bead and seed pearl drops, suspended from a rose-cut diamond bar, with integral fancy-link chain. L

An early 20th century 18ct gold diamond and opal dress ring. The oval-shape opal cabochon line, with old-cut diamond spacers. Hallmarks for Birmingham, 1916. Ring size N1/2. Weight 3.5gms. Overall con

An early 20th century French Belle Epoque diamond and seed pearl necklace. Designed as a graduated series of floral garlands, with two floral drop spacers, suspended from a graduated rose-cut diamond