A 19th century diamond cluster stick pin convertible to dress stud, featuring an old cut diamond

Set with 1 old mine cut diamond, measuring approximately 3.5mm, and 8 old mine cut diamonds measuring 3.39mm, approximate total weight 4.1 dwt (unmarked but tests 14K), approximate ring size 9.

A FINE ANTIQUE PINK TOURMALINE AND DIAMOND RING, 19TH CENTURY in yellow gold and silver, set with a cushion cut pink tourmaline of 10.50 carats within a cluster of old cut diamonds all totalling 2.5-2

SAPPHIRE AND DIAMOND CLUSTER RING, 19TH CENTURY The cushion-shaped sapphire, weighing 5.74 carats, within a border of old brilliant-cut diamonds, between scroll engraved bifurcated shoulders in 18 car

Antique Victorian gold old mine cut diamond and pearl bar pin c. 19th c. Likely Mid - Late 19th c. measures roughly 2 inches across.

Antique Victorian gold old mine cut diamond and pearl bar pin c. 19th c. Likely Mid - Late 19th c. measures roughly 2 inches across.

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

Antique 14 kt. Rose Gold and Old Mine Diamond Crown Pin , late 19th c., unmarked but tested 14 kt., set with 7 belcher set old mine cut diamonds totaling approx. .98 ct., L-N color, VS1-VS2 clarity, l

Mid 19th c Victorian rolled gold brooch pin set with 42 old mine cut round diamonds approximately 1 ct t.w. Pin is 1 7/8" long.

A LATE 19TH CENTURY PLATINUM AND DIAMOND LAVALIER NECKLACE Centering an old European-cut diamond weighing approximately 10.20 carats accented by old European-cut diamonds weighing approximately 1.50 c

A pair of late 19th-century diamond star brooches each of traditional design, set throughout with graduated old round-cut diamonds, unmarked; in a fitted case for Hamilton & Inches, 88 Princess Street

19th Century Antique Diamond and enamel monogram pendant The pendant of Tsar Nicholas I with crown monogram, set with rose and old-mine cut diamonds, with blue enamel surrounded by old mine-cut diamon

IMPORTANT 19th CENTURY MALTESE CROSS DIAMOND PENDANT/BROOCH, of openwork design, set with old cut diamonds totalling approx. 13 ct. The central diamond weighing 1.61 ct. L. 7 cm. 16 grams. With a fitt

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

A Burmese sapphire and diamond cluster ring. The early 20th century ovoid-shape Burmese sapphire, weighing approximately 4.50cts, and old-cut diamond cluster, to the later lower mount and replacement

Crafted out of 14K yellow and white gold, convertible from one necklace to a brooch/pendant and two bracelets, featuring an old European-cut diamond, weighing approximately 1.25 carats, having K-L col

Two have diamonds the larger being a 0.25 carat old mine cut diamond. Others have gemstones and seed pearls. Total weight excluding the retainer (seen on one of the pins) is 6.6 grams.

A FINE ANTIQUE DIAMOND AND ENAMEL BROOCH, 19TH CENTURY in yellow gold and silver, set to the centre with an old oval cut diamond of 2.14 carats within a scrolling border of black enamel, accented by a

ANTIQUE OPAL, DIAMOND AND ENAMEL BROOCH, 19TH CENTURY in high carat yellow gold, in open heart design set with a moon cabochon opal, old and rose cut diamonds totalling approximately 10.00 carats and

AN ANTIQUE DIAMOND EN TREMBLANT BROOCH, 19TH CENTURY in yellow gold and silver, designed as a bouquet of foliage, with a central trembler flower, jewelled allover with old cut and rose cut diamonds al

convertible to two dress clips; signed 'Yard'; containing two round brilliant cut diamonds [G-H/SI] weighing approximately 1.00 carat total; 166 old full and single-cut diamonds [G-H/VS-SI] weighing a

A PAIR OF DIAMOND EARRINGSThe scrolled cluster earrings set with old cut and pear cut diamonds, in collet and claw settings, approximately 5.10 carats total, with stud and clip fittings, in an associa

THREE GEM-SET RINGS, LATE 19TH CENTURY - EARLY 20TH CENTURY 1st: Set with a pear-shaped ruby and sapphire, within a rose-cut diamond surround, surmounted by an old brilliant-cut and cushion-shaped dia

Russian jeweled and enamel decorated walking stick attributed to Faberge, 19th century, having an enamel decorated collar executed in gold, rose cut diamonds, and silver, surmounting the birdseye mapl

c. 1910 Art Deco platinum diamond ring featuring an Old European cut diamond measuring 10.2 x 9.8 x 6.7mm weighing approx. 4.51 ct bezel set in the center of the ring with 10 additional Old European c