18K Gold Diamond and Opal Modernist Brooch

ED WIENER 18K Gold Hand Wrought Diamond Brooch Pendant Pin. Large sculptural modernist brooch with 5 faceted prong set diamonds and large set opal center stone. Mid century hand crafted studio jewelry

METAL: 18k Gold. MEASUREMENTS: Brooch is 36mm x 36mm. GEMSTONES: Opals, Diamonds approx. 2.20ctw (one stone is missing). MARKED: Casbah, 18k. WEIGHT: 10.4 grams.Gemstones have not been graded for colo

Antique Turtle Brooch with a center natural Opal (18x12x4mm) and Rose Cut Diamonds Approx. 2 CT. Measurements: 8.5x1.55\'\'. Weight: 10.2g.

18K gold and diamond brooch. Modernist Nouveau Style. Dimensions: Height: 1 inches, Width: 1.75 inches. Weight: 3.6 DWT --- US Packing and Shipping charge: Jewelry Flat Rate combined Shipping: $10 per

Unusual 18k Gold, Opal & Diamond Pendant/Brooch, Signed. Art Nouveau Style. Chip on chin, mostly visible on reverse. Dimensions- Total Pin L- 2 1/2". Total Weight- 17.5.g. 11.3dwt.

Ladies 18k Yellow Gold and Opal Ring, and an Opal, Diamond and 10k Yellow Gold Brooch. 7.7 g.t.w. Brooch: L: 1.25 in.

Ruby diamond opal brooch; steel and 18K yellow gold brooch with worn hallmarks; Test: white metal not gold/18K yellow gold, one oval 7x5mm opal is bezel set with small 3.5mm pearl accent set into yell

Ca. last half 20thC. Excellent with no breaks or repairs. Features fifty pave set diamonds ranging in size from approx. 3.5mm to 2mm. The pin is constructed of three layers of gold, two yellow, with t

Brooch features approx. 1.00ctw of (VS1/SI1-G/H) diamonds and approx. 0.66ctw of sapphires. Measures 75mm x 48mm. Marked with French Gold Assay Marks, tested 18K. Weight - 15.1g.Gemstones have not bee

Natural Australian Opal Emerald Diamond 18k Gold Pin Large Carved Flower Midcentury Brooch Description: I wish you could see this in person because it is sooooo much prettier than the pics! The large

Modernist 18k gold and diamond pin, textured spray design, six pear shaped opals, seven round diamonds, center diamond measures approximately 0.05 carats, surrounded by six diamonds measuring 0.03 car

18K Yellow Gold Platinum Weight 5gr Opal Approx 0.30 Ct Diamond Approx 0.35ct Retro Brooch Measurements 1.5”X0.7”

18K gold; 37 opals, approx. 4.50 carats; four marquise and round-cut rubies, approx. 1.10 carats; 15 pear-shaped emeralds, approx. 4.50 carats; 32 single- and round brilliant-cut diamonds, approx. 0.5

Opal, Diamond, White Gold Brooch Stones: Opal cabochons; full-cut diamonds weighing a total of approximately 4.40 carats Metal: 18k white gold Gross Weight: 2

Ed Wiener (American, 1918-1991). Signed vintage designer gemstone brooch. A freeform Brutalist design with prong set round cut diamonds set around a large oval opal doublet with great play of color. C

This is a signed Dunay 18 karat yellow gold genuine malachite and natural diamond brooch.  This mid-1900's Modernist brooch features round polished malachite and approximately .10 carats of round

Approximately pentagon shaped having lapis lazuli and opal collage of stones in an intarsia design topped by round cut diamonds; signed 'N. Medvedev' on back, dated 1992 Property from: an Illinois est

Ring.18kt yellow gold modernist cocktail ring with large oval opal with a surround of 7 round brilliant cut diamond accents. Stamped, "18k", with unidentified maker's mark of "D". Total approx. diamon

Stone (or possibly composition) base with opal eyes, diamond eyelashes, gold nose, with a diamond and turquoise fly mount. (gold mark hard to read at either 10K or 18K). 2.25" X 1.75"

AMETHYST, OPAL AND DIAMOND BEE BROOCH Oval mixed cut amethyst, round brilliant cut diamonds and round cabochon opals. 18 karat yellow gold. 1 1/2 inches x 1 inch. Stamp: SB 18K 765. Gross wei

18K yellow gold and 14K white gold Art Nouveau style plique-à-jour dragonfly brooch set with a cabochon opal, two cabochon aquamarine eyes and round cut diamond accents. Apparently unmarked but tes

14k gold diamond brooch set with three rose cut diamonds, approximately .90 ct tw, and two 18k gold figural brooches brooches, Chicks set with pearls and Bee set with seed pearls and opal, the largest

18K. A wonderful three dimensional turtle brooch with diamonds, natural French cut rubies and intricately set opals in an enamel border. Silver topped articulated head, tail, and limbs. Excellent cond

David Webb 18k yellow and white gold brooch with approx. 4cts of diamonds. Stamped WEBB 18K. Approx. 1.75 x 1.75 in., gold weight 28 grams.