Masriera Hermanos, Modernist diamonds set, early 20th

DIAMOND-SET LONGCHAIN, EARLY 20TH CENTURY The trace-link chain spectacle-set with old brilliant and cushion-shaped diamonds, diamonds approx. 8.00cts total, length 147.0cm For further information on

GEM-SET PENDANT; DIAMOND-SET PENDANT, EARLY 20TH CENTURY 1st: Set to the front with various gemstones, including garnet, spinel and zircon, suspending two cable-link chain swags, 2nd: Set throughout w

DIAMOND AND PEARL-SET BRACELET, EARLY 20TH CENTURY Set with old brilliant and rose-cut diamonds and pearls, pearls untested, length 16.0cm For further information on this lot please visit Bonhams.com

An early 20th century diamond set Middle Eastern star and crescent brooch, the gold setting with rose cut diamonds, 4.3cm long

DESCRIPTION:18kt yellow gold ring featuring a malachite center stone with 1ct. in channel set diamonds. CIRCA:Early-Mid 20th Ct. ORIGIN:Italy DIMENSIONS:Ring Size:7 Total Weight:12 grams CONDITITION:G

A late 19th / early 20th century diamond ring set with five old-cut diamonds of approximately 1.40 carats combined, in unmarked yellow gold mount, size N 1/2, 3.5 grams.

A late 19th / early 20th century diamond ring set with five old-cut diamonds of approximately 1.40 carats combined, in unmarked yellow gold mount, size N 1/2, 3.5 grams.

An early 20th century 18ct gold diamond set signet ring, rectangular head with a star set old cut diamond, estimated approximate weight 0.04ct, head dimensions 9.6 x 8.5mm, tapering engraved shoulders

Art Nouveau 14 Karat Yellow Gold Diamond Owl Stickpin The Terminal modeled as an Owl's Head with Fine Deeply Engraved Details and Eyes comprised of Two Bezel Set Old Cut Diamonds Early 20th Century Eu

Four diamond and gem-set rings. To include an early 20th century 15ct gold ruby and diamond dress ring, an early 20th century 9ct gold sapphire and diamond ring, together with two further rings. Three

Two diamond and gem-set brooches. To include an early 20th century cultured pearl and diamond bar brooch and a composite split-pearl and blue paste brooch. Estimated total diamond weight 0.10ct. Lengt

AN EARLY 20TH CENTURY DIAMOND AND PEARL BRACELET CIRCA 1920The pierced panels each set with a trio of old mine cut diamonds with rose cut diamond set shaped borders, approximately 4 carats total, with

AN EARLY 20TH CENTURY DIAMOND CLUSTER RING a fancy yellow old-cut diamond within a pierced milgrain border of white old-cut diamonds, to fancy diamond-set shoulders. Estimated principal diamond weight

AN ANTIQUE PEARL AND DIAMOND RING, EARLY 20TH CENTURY in yellow gold, the openwork face set with an old cut diamond and two pearls in a border of rose cut diamonds, further rose cut diamonds set to th

A jadeite and diamond pendant in a gold toned setting from the early 20th century. The green jadeite is carved into a gourd form. It is topped with small diamonds set in flowers and leaf forms. Dimens

A jadeite and diamond pendant in a gold toned setting from the early 20th century. The green jadeite is carved into a gourd form. It is topped with small diamonds set in flowers and leaf forms, each m

AN EARLY 20TH CENTURY SAPPHIRE AND DIAMOND CLUSTER RING an oval-cut sapphire within a fancy pierced milgrain border of round-cut diamonds, to diamond-set shoulders. Estimated total diamond weight 0.30

A late 19th / early 20th century diamond 'Halley's Comet' brooch, the tapered mount set to one end with a cluster of three old-cut diamonds, and a row of seven graduated mixed rose-cut diamonds, set i

Three Piece 10K Yellow Gold Set, early 20th c., consisting of a pair of pierced earrings and a lady's dinner ring, each with an oval .5 carat ruby flanked by two small diamonds on an oval pierced fram

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

AN EARLY 20TH CENTURY FABERGE SILVER GILT AND ENAMEL VESTA CASE, WORKMASTER HENRIK WIGSTROM having a fluted white enamel design with red and green cabochon enamel bands and diamond set thumbpiece, gol

A PAIR OF EARLY 20TH CENTURY SAPPHIRE AND DIAMOND PENDANT EARRINGS, oval-cut sapphires in milgrain settings suspended from old-cut diamond-set articulated links, total estimated sapphire weight 4.67ct

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

AN EARLY 20TH CENTURY NATURAL SALTWATER PEARL AND DIAMOND BROOCH, three natural button pearls within an old-cut diamond-set foliate frame and suspending a pearl and diamond pendant drop. Estimated tot