Marcus & Co., attribution, Sapphire, diamond, and gold brooch

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

Marcus & Co. Edwardian Diamond Crescent Brooch platinum/18k yellow gold, the brooch mounted with old European-cut and old single-cut diamonds weighing approximately 2.50 carats in total, signed "M & C

AUTHENTIC TIFFANY & Co. 18K YELLOW GOLD FLOWER BROOCH PINBrooch measures apx 1.47" in diameter18K Yellow gold diamond and blue sapphire brooch1 super clean diamond6 natural blue sapphires Pre-owned in

Tiffany & Co. Diamond, Sapphire, Gold Brooch Stones: Full-cut diamonds weighing a total of approximately 0.09 carat; round-cut sapphires weighing a total of ap

TIFFANY & CO. Vintage 14K Yellow Gold Diamond & Sapphire Brooch Weighing 19.0 grams Set with 15 Diamonds weighing app. 0.50 Ct. F-G Color, VVS-VS Clarity Along with 21 Sapphires weighing app. 2.00 Ct.

Metal : 18k Gold Designer : Tiffany & Co Gemstone : Diamond approx. 0.08ct, Sapphires Measurements : Brooch is 25mm in diameter Marked: : 18k, Tiffany & Co Weight: 16.2 grams

Vintage Tiffany & Co Retro Diamond, Sapphire and 14 Karat Yellow Gold Pendant / Brooch and Screw Back Earrings. Signed. Pendant measures 1-1/4" H, 1-1/8" W; earrings measure 7/8" x 7/8". Approx. total

Marcus & Co. Platinum, Gold, Amethyst and Diamond Brooch One lozenge-shaped amethyst ap. 27.0 x 18.0 x 9.7 mm., rose-cut diamonds, signed M & Co., c. 1915, ap. 8.2 dwts. C

A TIFFANY & CO. 18K GOLD, DIAMOND AND SAPPHIRE BROOCH, 20TH CENTURY. The rosette form pin with overlapping rows of fluted petals centered with 16 brilliant cut diamonds and 19 round cut blue sapphires

DK Tiffany & Co. Italy 18k Yellow Gold, Diamond & Sapphire Flower Brooch Vintage This is a must for a collector. The weight is 8.4 grams. The length is 1 ¼ inches. The height is 1 ¼ inches. The widt

Tiffany & Co. Pair of Gold, Sapphire and Diamond Clip-Brooches 14 kt., 2 round diamonds ap. .15 ct., 4 round sapphires, signed Tiffany & Co., ap. 16.7 dwts. C

Diamond, Yellow Sapphire, Platinum, Gold Brooch, Schlumberger for Tiffany & Co. The brooch features a round-cut yellow sapphire weighing approximately 1.10 carats, enhanced by full-cut diamonds we

TIFFANY & CO., YELLOW GOLD, DIAMOND AND SAPPHIRE 'MOVING CHESTNUT' BROOCH AND CLIP EARRINGS Consisting of an articulated horse chestnut brooch containing one round brilliant cut diamond and numerous r

An 18K yellow gold, sapphire, and diamond brooch, Tiffany & Co. designed as a leaf in eighteen karat yellow gold, set with a total of twelve sapphires and diamonds; estimated total diamond weight: 0.3

METAL: 18k Gold. MEASUREMENTS: Brooch is 75mm x 34mm. GEMSTONES: Diamonds, Sapphires. MARKED: Tiffany & Co, 1989, Germany, 750. WEIGHT: 20.4 grams.Gemstones have not been graded for color and clar

METAL: 18k Gold. MEASUREMENTS: Brooch is 47mm x 38mm. GEMSTONES: Sapphires, 3 diamonds. MARKED: Tiffany & Co, Italy, 18k. WEIGHT: 17.4 grams.Gemstones have not been graded for color and clarity ,a

Mid-Century or Vintage Brutalist brooch USA yellow gold, turquoise, sapphires, diamond unmarked 13.6 dwts 3"w x 1 5/8"h

This lot is accompanied by an Independant Gemologist Appraisal letterMarcus & Co style 18k gold emerald diamond and enamel, art nouveau antique brooch/pendant designed with one elongated, oval cabocho

An 18 Karat Yellow Gold, Diamond, Sapphire and Emerald Butterfly Brooch, Tiffany & Co., Circa 1989, containing numerous round brilliant cut diamonds weighing approximately 0.35 carat total, numerous

TIFFANY & CO. 18KT YELLOW GOLD, RUBY, SAPPHIRE AND DIAMOND GIRAFFE BROOCH, Approx. 31.02 total dwt. (No Reserve*) Two mirrored giraffes cinched at the neck with a pavè diamond bow, approx. 2.00 c

TIFFANY & CO. SAPPHIRE & DIAMOND FLORAL BROOCH set with a center diamond and a surround of 6 sapphires approx. 0.22 carats, in yellow gold stamped Tiffany & Co., tests 14K, 1.8in., 10gms.

An 18 Karat Yellow Gold, Diamond and Sapphire Demi-Parure, Tiffany & Co., consisting of a brooch containing three round brilliant cut diamonds weighing approximately 0.10 carat total and 11 round mixe

Vintage Tiffany & Co. 14 karat yellow gold, blue sapphire & diamond four leaf clover brooch. Signed "Tiffany & Co. 14K". Measures: 1-1/4" in Diameter. Total Weight: 6.4 dwt. Provenance: Private Collec

18K yellow gold pin with three flower configurations. One with a 7mm x 5mm cabochon ruby four prong set surrounded by five petals containing eighteen diamond melee, one with a 7mm x 5mm Cabochon emera