JEWELRY. Antique Opal and Diamond Brooch.

AN ANTIQUE OPAL AND DIAMOND BROOCH in yellow gold and silver, set with a central cabochon opal within a scrolling openwork mount set with old cut diamonds, the diamonds all totalling 5.3-5.5 carats, n

AN ANTIQUE OPAL AND DIAMOND BROOCH, 19TH CENTURY in high carat yellow gold, designed as a crescent moon jewelled with graduated cabochon opals accented by old and rose cut diamonds, set to a plain bar

AN ANTIQUE OPAL AND DIAMOND BROOCH in yellow gold and silver, formed of a trio of flower motifs, each set at the centre with a round cabochon opal, accented in the petals by rose cut diamonds, unmarke

Jewelry. Antique Diamond filigree brooch, 14kt white gold w/ center stone approx. .50ct, 5mm. & 10 small diamond, 2.80 dtw, length 45mm

AN ANTIQUE OPAL AND DIAMOND BROOCH in yellow gold and silver, set with a trio of graduated oval cabochon opals, accented by rose cut diamonds, no assay marks, 3.5cm, 2.6g.

10k white and yellow gold pin brooch, set with a central round shaped cabochon opal, approximate total weight of opal 1.57ct, flanked by four old European cut diamonds, approximate total weight of dia

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

Antique Black Australian Opal on Matrix Diamond Brooch of 18K Gold Dimensions: 15.86 x15.35 x12.00 mm* Weight: 22.80 grams* * (estimate/approximately)

Pendant. Beautiful silver-topped gold brooch/pendant inlaid with diamonds in a floral design with 3 graduated diamond drops. Total approx. weight is 9.3 dwt. From a Hastings-on-Hudson, NY estate. Dime

Antique black opal cameo set atop onyx set in platinum and 18kt white gold with diamonds. Width 1 3/8;; total weight 7.5 grams Condition: Two tight fissures in onyx at 12 and 6, perhaps intentional

ANTIQUE OPAL AND DIAMOND CRESCENT BROOCH,High carat gold.Opals well matched with nice play of colour including reds.Diam. 2.7 cm.5 grams.

Antique Victorian Opal, diamond, enamel, and gold brooch Set with cabochon opals and rose-cut diamonds, in a swirling surround of black enamel; 1880s Yellow gold 2.75 x 1.25 in; Gross weight 12.0 dwts

Antique silver-topped 18kt yellow gold floral form brooch inlaid throughout with rose cut diamonds and a single prong-set Old Mine cut diamond. OMC diamond measures approx. 4.6mm x 4.3mm. Total approx

AN ANTIQUE OPAL AND DIAMOND BAR BROOCH in 18ct gold, set with a central oval cabochon opal between two old cut diamonds, with further rose cut diamonds to the bar, French import marks for 18ct gold, 3

METAL: 14k Gold. MEASUREMENTS: Brooch is 35mm in diameter. GEMSTONES: Opal (multiple stones are chipped). Diamonds approx. 0.60ctw. MARKED: 14k. WEIGHT: 11.4 grams.Gemstones have not been graded for c

Antique silver-topped gold scroll form pendant inlaid with diamonds. Total approx. weight is 4.1 dwt. From a Hastings-on-Hudson, NY estate. Dimensions: 1.25" w x 1" h.

JEWELRY: Antique Carnelian, Pearl and Diamond Brooch, mounting: tested 18K yellow gold with silver back and settings, diameter: 1 5/8" x 1 ½", oval hardstone cameo surrounded by seed pearls and diamo

Antique 14kt gold brooch comprised of a central cluster of (4) Old Mine cut diamonds with a surround of Old Mine cut diamonds, single cut diamonds, and (2) Old Mine cut pear-shaped diamonds. (4) centr

ANTIQUE BELLE EPOQUE OPAL AND DIAMOND BROOCH, Set with a large marquise shaped opal of approx. 28 x 9.7 mm. Surrounded with bright and lively diamonds. L. 4 cm. 10.1 grams.

Antique floral form brooch inlaid throughout with rose cut diamonds and a single round faceted ruby? From an Oley, PA estate. Dimensions: brooch measures approx. 1.18" w x 3.55" h.

Antique Continental, most probably French, silver-topped 18kt gold brooch displaying an Old European cut diamond inlaid en tremblant bird set above a floral wreath inlaid with Old European cut diamond

Antique silver-topped 14kt yellow gold brooch set with diamonds of various sizes, and 3 rubies of varying shapes and sizes. Total approx. weight is 6.2 dwt. From a Riverdale, NY estate. Dimensions: 1.

Large baroque pearl with silver-topped gold foliate and bow decoration inlaid with rose cut diamonds of various shapes and sizes. Total approx. weight of brooch is 6.7 dwt. From a New Rochelle, NY est

Inlaid with (6) Old Mine cut diamond accents. Monogrammed verso. Total approx. weight is 9.6 dwt (gross). From an Oley, PA estate. Dimensions: brooch measures approx. 1.375" w x 1.875" h.