A Boulder Opal Ring.

AN 18 CARAT GOLD BOULDER OPAL RING, a round opal in a bezel setting to a tapering shank. Hallmarked Birmingham 1899, ring size O, 5.6 grams

Jewelry: Ladies Estate Vintage 14k Gold Boulder Opal Ring Metal: 14K yellow gold Gram Weight: 8.4 Ring Size: 7 Dimensions: 18mm x 14mm profile Please note that this lot has a confidential reserve. Whe

Boulder opal ring GG 750/000 Naturalistic single piece with a boulder opal 25 x 9,5 mm, RG 52, W marked, 13,6 g

14kt Yellow Gold and boulder Opal ring in filigree setting.

A BOULDER OPAL RING. 14 karat yellow gold mounting contains one prong set oval boulder opal cabochon. Size: 8 1/2 Wt: 17.6 grams

METAL: 14k Gold. MEASUREMENTS: Ring size 5.25, top is 24mm x 14mm. GEMSTONES: Boulder opal. TESTED: 14k. WEIGHT: 3.4 grams.Gemstones have not been graded for color and clarity ,and tested for clarity

14k 3 grams Size 6.5

Here is a very nice men\'s natural boulder opal ring set in 18K yellow gold. This one has been around for awhile, probably since the 40\'s.Stunning oval shape boulder opal displays a beautiful green p

Platinum 4.5Ct Boulder Opal & Diamond Ring, Size 4 3/4, TW:8.2 Grams.

Vintage Blue Doublet Boulder Opal Cocktail Ring 9K Yellow Gold, 4.48 Grams This is a gorgeous statement ring! Let us know if you have any questions. Gemstones: 1 blue doublet boulder opal, 15 mm x 11

14K yellow gold ring set with a boulder opal, the outer edge in layers of brown and the center with blues, greens and some reds, approx. 11 x 28mm, ring size 7. The pendant with a pear shaped opal wit

A yellow metal and boulder opal dress ring; the oblique shaped rectangular plaque within a textured mount and set above a textured fold-formed shank. Italian hallmarked '750' and signed J.L. Ring head

Features one boulder brown opal that is cut in an oval shape and is bezel set, measuring 28.00 mm long x 14.00 mm wide and 7.10 mm thick with an approximate weight of 13.46cts.

14K white gold ring, brightly polished, featuring centered prong set boulder opal cabochon, weighing approx. 2.65 carats, further adorned with 6 prong set round brilliant cut diamonds weighing a total

Signed K.A. sterling silver black boulder opal and turquoise ring, marked: "K.A. .925". Ring measures: 1.06"L x 2.0"W. Size: 7 1/2. Approx: 0.34 ozt. inclusive.

(11) Sterling rings to include sterling chased ring with applied brass decoration and (4) pink colored stones testing in quartz/amethyst/citrine range, 10.5 sz, boulder opal sterling ring, sz 7/7.5, s

A 14 Karat Yellow Gold, Boulder Opal and Diamond Ring, containing one freeform boulder opal measuring approximately 36.00 x 25.80 mm and 126 round brilliant cut diamonds weighing approximately 1.25 ca

Opal and Diamond Ring.  This 18 karat yellow gold ring features a 13.93 carat, polished freeform beautiful genuine boulder opal that is bezel-set in a frame of .75 carats round, brilliant-cut, G-

14.40ct Boulder Opal Diamond Freeform Ring, set in 18k Gold with 2/0.064 1 VS2 Diamonds. 17.7g, approximately 1.3125 x 1 x 0.5625 in.

Boulder Opal, Diamond, Gold Ring. Featuring one triangular shaped boulder opal measuring approximately 20 x 14 mm, accented by eight single-cut diamonds weighing a total of approximately 0.15 cttw., s

BOULDER OPAL AND DIAMOND RING Containing one freeform boulder opal measuring approximately 24.00 x 11.40 mm and three round brilliant cut diamonds. Mounted in yellow gold. Ring size 6 3/4. Stamp: 750.

Artist : Sajen Title : Sterling Silver Boulder Koroit Australian Opal Ring Description (FR) : Bague en argent sterling, sertie d'une opale australienne Boulder Koroit Grandeur : 8 (Ajustable) Descript

GRIMA: BOULDER OPAL AND DIAMOND DRESS RING, 1977 The oval boulder opal in a pierced mount of textured wire with brilliant-cut diamond accents, mounted in 18 carat gold, signed Grima, workshop mark HJC

19.50ct Boulder Opal, 1.15ctw SI1-SI2/G-H Diamond Solid 14K Yellow Gold Ring W/Blue Sapphire Accents - This lovely ring is made of solid 14k yellow gold and boasts an approximately 19.50ct inset bould