An early 20th century platinum conch pearl and diamond

An early 20th century gold conch pearl, diamond and split pearl brooch. The oval conch pearl, suspended from an old-cut diamond and peach split pearl, with free-form conch pearl sides. Estimated total

A set of early 20th century 18ct gold and platinum mother-of-pearl and diamond dress studs. Each designed as an old-cut diamond collet, within a mother-of-pearl surround with engraved border. Estimate

A FINE ART DECO CEYLON NO HEAT SAPPHIRE, DIAMOND AND PEARL NECKLACE, EARLY 20TH CENTURY in platinum and yellow gold, set throughout with nine oval cut blue sapphires all totalling approximately 16.90

This is a superbly crafted ladies ring dating to the Edwardian era of the early 20th century. Rendered in fine 18K rose gold, the ring features Old European cut diamonds set in platinum. Accented with

Platinum, early 20th century, with baroque cultured pearls, studded with brilliants, approximately 4.2 ct in size. Approximate weight: 15.2 g. Dimension: 5 cm.

Victorian/Edwardian platinum and multicolor 14K gold, diamond and cultured pearl brooch. Stamped, "B14K". 11.7 grams. 1.875"L, Circa - Late 19th - Early 20th C. PROVENANCE: James Robinson, New York. F

11.4 grams total weight. With old European and mine cut diamonds, 15 total. 3.25 ct. total, largest diamond .38cts. VS - SI clarity and I-J-K color. Small chip on central diamonds. Top of pin platinum

An early 20th century platinum diamond cocktail watch. The circular-shape cream dial, with black Arabic numerals, within a single-cut diamond border, to the circular and rose-cut diamond pierced brace

A ladies early 20th century platinum diamond manual wind cocktail watch. The white dial with black Arabic numerals and minute track, with old and single-cut diamond bezel and expandable bracelet. Esti

TIFFANY & CO. - a lady's early 20th century platinum diamond cocktail watch. The circular-shape white dial with black Arabic numerals and minute track, with single-cut diamond double surround, similar

An early 20th-century pearl and diamond pendant and matching earrings each of open scrolling design, set throughout with round-cut diamonds and various (untested) pearls, earrings to post and butterfl

An early 20th century platinum and gold, old and rose-cut diamond ring.Estimated total diamond weight 0.75ct. Ring size P. 5.3gms.

AN EARLY 20TH CENTURY PEARL AND DIAMOND PENDANT / BROOCH a pearl within an openwork diamond and seed pearl-set clover leaf frame. Estimated total diamond weight 0.90ct, 3.2cm diameter, 8.8 grams One

AN EARLY 20TH CENTURY PEARL AND DIAMOND BAR BROOCH, a pearl within a milgrain diamond cluster border and spaced by further pearls, within a halo frame and to a tapering bar. Estimated total diamond we

Early 20th Century Platinum and Diamond Bracelet. Openwork design set with seven round diamonds of graduated size, alternating with accent diamonds. Unmarked. Good condition. Approximately 14.4 grams.

An early 20th century platinum and gold diamond pendant. Of circular outline, the pave-set diamond monogram reading the letters A and M, suspended from a loop surmount. Estimated total diamond weight

AN EARLY 20TH CENTURY SAPPHIRE, PEARL AND DIAMOND HORSESHOE BROOCH, a horseshoe set with graduated old-cut diamonds, to a knife-edge bar set with a pearl and round-cut sapphires, total estimated diamo

An early 20th century split pearl and diamond ring. The pave-set split pearl heart, with old-cut diamond floral cluster highlight, to the later replacement band. Estimated total diamond weight 0.15ct.

An early 20th century split pearl and diamond pendant. Designed as an old-cut diamond and split pearl cluster, with split pearl foliate surround and surmount. May be worn as a brooch. Estimated diamon

An early 20th century split pearl and diamond ring. The alternating split pearl and old-cut diamond line, with rose-cut diamond double spacers. Estimated total old-cut diamond weight 0.30ct, H-I colou

An early 20th century platinum old-cut diamond two-stone crossover ring, with asymmetric shoulders, estimated total diamond weight 0.55ct, H-J colour, SI2-P1 clarity, band stamped PLAT, ring size N, 2

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

An early 20th century gold cultured pearl and diamond bracelet. Comprising a series of geometric openwork panels, each with diamond scroll and cultured pearl highlights. Estimated total old-cut diamon

An early 20th century platinum and 9ct gold diamond cocktail watch. The silvered dial, with vari-cut diamond bezel and geometric lugs, to the later 9ct gold adjustable mesh strap. Estimated total diam