Diamond brooch / pendant

MARCUS & CO: SAPPHIRE AND DIAMOND BROOCH/PENDANT, EARLY 20TH CENTURY The central oval-cut sapphire within an openwork quatrefoil border of floral and foliate motifs, millegrain-set throughout with old

A FINE ART DECO GREEN TOURMALINE AND DIAMOND BROOCH / PENDANT in platinum, set with an octagonal step cut green tourmaline of 13.50 carats within two concentric octagonal borders of round cut diamonds

AN ANTIQUE DIAMOND BROOCH / PENDANT in yellow gold and silver, the openwork body set throughout with old cut diamonds, the diamonds all totalling 4.2-4.6 carats, no assay marks, 4.4cm, 14.6g. 

A LATE 19TH CENTURY SAPPHIRE AND DIAMOND BROOCH / PENDANT an oval-cut sapphire within an openwork scroll frame of old-cut and rose-cut diamonds, suspending a sapphire pendant drop. Estimated total dia

A LATE 19TH CENTURY SAPPHIRE AND DIAMOND BROOCH / PENDANT an oval-cut sapphire within an openwork scroll frame of old-cut and rose-cut diamonds, suspending a sapphire pendant drop. Estimated total dia

Edwardian Platinum and Diamond Brooch/Pendant ca. 1910, the circular platinum brooch with an openwork lacy pattern set with a central old European-cut diamond, surrounded by smaller European-cut diamo

YELLOW GOLD, AQUAMARINE AND DIAMOND BROOCH/PENDANT NECKLACE Consisting of a yellow gold and platinum pendant/brooch containing one emerald cut aquamarine measuring approximately 20.45 x 15.85 x 11.10

IMPORTANT DIAMOND BROOCH/PENDANT, in precious white metal. Of part openwork design, throughout set with diamonds totalling approx. 4 ct. L. 5.5 cm. 13.5 grams.

An exquisite Victorian star brooch pendant, set with diamonds and seed pearls, in 9K gold, England, circa 1870's - 1900's. The expertly crafted 9 karat yellow gold setting, in the shape of a star, has

An Edwardian platinum and diamond brooch pendant centering an old European-cut diamond weighing approximately 1.25 carats; accented by single and old European-cut diamonds; total remaining diamond wei

ANTIQUE DIAMOND BROOCH/PENDANT, of stylized shell design, with a diamond drop to the bottom. Diamonds totalling approx. 3.60 ct. L. 5.3 cm. 16.8 grams. With antique fitted box.

South Sea Pearl and Diamond Brooch/Pendant 18k yellow gold, the brooch/pendant mounted with white South Sea pearls with a good luster, measuring approximately 13.00 mm to 16.00 mm, accented by round b

FINE VICTORIAN CERTIFICATED NATURAL SALTWATER PEARL AND DIAMOND BROOCH PENDANT. set with a natural saltwater pearl drop. with lively diamonds totalling approx 1.20 ct. L 5.7 cm. W 3.2 cm. 11.3 grams.

IMPORTANT DIAMOND BROOCH/PENDANT, in precious white metal. Of part openwork design, throughout set with diamonds totalling approx. 4 ct. L. 5.5 cm. 13.5 grams.

ANTIQUE DIAMOND BROOCH/PENDANT, of stylized shell design, with a diamond drop to the bottom. Diamonds totalling approx. 3.60 ct. L. 5.3 cm. 16.8 grams. With antique fitted box.

A FINE ANTIQUE DIAMOND BROOCH / PENDANT, 19TH CENTURY the oval body of openwork design, set throughout with old cut and rose cut diamonds, the diamonds all totalling 3.6-4.2 carats, with retractable l

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

14k Yellow Gold Pearl Diamond Brooch Pendant Choker . 3 Pearl Strand and 1.5" Diamond Pendant around with 1 ct diamond center stone SI1 I-H Floral motif with paved diamonds. Size 15" approx. 35 gShoul

METAL: Platinum. GEMSTONES: Diamonds approx. 3.00ctw. MEASUREMENTS: Brooch is 42mm x 33mm. has a hook on the bottom to attach a drop. TESTED: Plat. WEIGHT: 12.5 grams.Gemstones have not been graded fo

Platinum and diamond brooch/pendant set with marquis and baguette diamonds approximately 4ct. total weight.

Oval Brilliant Cut Amethyst and Diamond Brooch Pendant, an oval brilliant cut amethyst weighing approximately 35.00 carats surrounded by 16 round brilliant cut diamonds approx. 2.50 ctw and 16 marquis

METAL: 14k Gold/ Platinum. MEASUREMENTS: Necklace with the pendant attached is 19" long, pendant detaches and converts into a brooch - 46mm x 15mm. GEMSTONES; Diamonds approx. 3.00ctw. MARKED: Ir

Old miner's cut center diamond surrounded by close set stones. 1 1/16 x 1 1/16 (approx) SI 1. F color 4.4 mm 1/3 carat set in 14k partially rhodium plated gold.

Antique Silver-Topped-Gold Natural Pearl and Diamond Brooch / Pendantof oval form centering on a natural saltwater button pearl (8.25mm) and with two pearl accents (4.8mm and 4.9mm) (origin not tested