Rocks, Minerals & Fossils

Geodes & Minerals

BOLDER OPAL 21.40Cts mwf2272 First Image

#image-loader-main { display: none; }

BOLDER OPAL 21.40Cts mwf2272 First Image

BOLDER OPAL 21.40Cts mwf2272

Total Sales0 Sold

Median Sale Price

Sale Price Range

Similar Upcoming Sales

2.95ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL (1 of 2)

2.95ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

Mar 01, 2026

2.95ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL (1 of 2)

2.95ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

2 days Left

12.30ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL (1 of 2)

12.30ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

Mar 01, 2026

12.30ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL (1 of 2)

12.30ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

2 days Left

Earthsplit Flame Boulder Opal Cushion Cabochon (1 of 2)

Earthsplit Flame Boulder Opal Cushion Cabochon

Weatherham Estate Treasures

3 days Left

7.13ct LOOSE OVAL CABOCHON NATURAL BLACK OPAL AUSTRALIA (1 of 2)

7.13ct LOOSE OVAL CABOCHON NATURAL BLACK OPAL AUSTRALIA

Mar 19, 2026

7.13ct LOOSE OVAL CABOCHON NATURAL BLACK OPAL AUSTRALIA (1 of 2)

7.13ct LOOSE OVAL CABOCHON NATURAL BLACK OPAL AUSTRALIA

Feb 12, 2026

8.92ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL (1 of 2)

8.92ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

Mar 01, 2026

8.92ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL (1 of 2)

8.92ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

2 days Left

Natural Multi Color Opal Flashing Boulder 19.77 Ct. Free Form Cabochon Gemstone From Australia (1 of 3)

Natural Multi Color Opal Flashing Boulder 19.77 Ct. Free Form Cabochon Gemstone From Australia

Treasure of Gems & Jewelry

Feb 08, 2026

15.20 ct Natural Multicolor Pietersite, Oval, Opaque, Namibia (1 of 3)

15.20 ct Natural Multicolor Pietersite, Oval, Opaque, Namibia

Weatherham Estate Treasures

Feb 17, 2026

19.85ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL (1 of 2)

19.85ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

2 days Left

17.56ct Canadian Ammolite Cabochon (1 of 2)

17.56ct Canadian Ammolite Cabochon

Weatherham Estate Treasures

Feb 18, 2026

19.85ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL (1 of 2)

19.85ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

Mar 01, 2026

31.3ct Fancy Cabochon Brazilian "Golden Choice" Quartz With Marcasite (1 of 2)

31.3ct Fancy Cabochon Brazilian "Golden Choice" Quartz With Marcasite

Weatherham Estate Treasures

Feb 12, 2026

4.32ct Multicolor Black Oval Opal Gemstone (1 of 2)

4.32ct Multicolor Black Oval Opal Gemstone

Weatherham Estate Treasures

Feb 18, 2026

Similar Sale History

Unlock All Prices

Sold

14K Gold Bolder Opal Earrings (1 of 4)

14K Gold Bolder Opal Earrings Each consisting of one 10mm x 7mm freeform bolder opal bezel set into hand wrought, button earrings with friction posts and backs. Condition: Very good, missing one post back as shown.

Sold

14k Gold Bolder Opal Pendent (1 of 2)

14k Gold Bolder Opal Pendent One 16mm x 10mm free form bolder opal bezel set into hand wrought pendent weighing 3.9 grams. Condition: Very good

Sold

Designer Jay King Mine Finds Turquoise & Bolder Opal Beaded Sterling Necklace (1 of 5)

Designer Jay King Mine Finds Turquoise & Bolder Opal Beaded Sterling Necklace This fine sterling natural stone Designer piece has been tested and researched prior to listing. Please view all our pictures they are part of our description .Happy Bidding Metal : Sterling Color : S

Sold

Empirial Blue Australian Black Opal (1 of 4)

Empirial Blue Australian Black Opal One Oval-shape, Cabochon-cut Austrailian black opal 159.70 Carats in weight. Intense blue very even play of color, very good finish\\\' no blemishes ,38mmX33mmX23mm, in 14K gold, 3.40 ct diamond.If in

Sold

ANGELA CUMMINGS FOR TIFFANY & CO., A RARE OPAL, CARNELIAN, ROCK CRYSTAL AND HARDSTONE LILY BANGLE, (1 of 2)

ANGELA CUMMINGS FOR TIFFANY & CO., A RARE OPAL, CARNELIAN, ROCK CRYSTAL AND HARDSTONE LILY BANGLE,ANGELA CUMMINGS FOR TIFFANY & CO., A RARE OPAL, CARNELIAN, ROCK CRYSTAL AND HARDSTONE LILY BANGLE, 1970S in 18ct yellow gold, the hinged bangle inlaid with opal, polished carnelian, rock crystal and p

Sold

TONY DUQUETTE, OPAL, ROCK CRYSTAL AND MOONSTONE (1 of 4)

TONY DUQUETTE, OPAL, ROCK CRYSTAL AND MOONSTONE TONY DUQUETTE, OPAL, ROCK CRYSTAL AND MOONSTONE NECKLACE Containing 111 oval cabochon opals in various sizes, 34 round cabochon rock crystal and 44 oval cabochon moonstones. Mounted in white gold. 18

Sold

Diamond Opal and Sapphire Necklace (1 of 4)

Diamond Opal and Sapphire Necklace Crafted in platinum and 18K gold; set with a trapezoid cabochon-cut black opal, measuring approximately 12.40 x 9.30 x 4.65 mm; lozenge-shaped sapphire, weighing approximately 2.60 carats; accented by

Sold

HAROLDO BURLE-MARX OPAL, 18K GOLD NECKLACE, BRAZIL (1 of 2)

HAROLDO BURLE-MARX OPAL, 18K GOLD NECKLACE, BRAZIL A modernist jointed torque suspends two polychromatic crystal opals, 40.7 x 18 x 5 mm and 49.8 x 18 x 7 mm., approx. 55 cts. TW by formula, opal clasp. Ca. 1959. Impressed Burle Marx 18k with other in

Sold

Piaget, Opal, diamond, and gold wristwatch (1 of 3)

Piaget, Opal, diamond, and gold wristwatch Piaget Opal, diamond, and gold wristwatch, Ref. 9343 A6 The oval opal dial, framed by two rings of graduated marquise and round brilliant-cut diamonds, to the textured gold bracelet; 1970s 18k yellow

Sold

From a private MN Estate - T&Co. Black Opal and Diamond Ring with Box (1 of 4)

From a private MN Estate - T&Co. Black Opal and Diamond Ring with Box View a video of this lot: Click HereSummary of Key Characteristics • Metal: platinum • Gemstone(s): black opal approx. 4.00 carats; round brilliant cut d

Sold

Black Opal And Diamond Pendant Necklace, Platinum (1 of 6)

Black Opal And Diamond Pendant Necklace, Platinum 3.87ct Cabochon Black Opal And 0.43ctw Natural G-H-I Diamonds Set In Platinum. 18 Inches Including Chain, 6.9 Grams Total Weight. Wire Transfer Or Expedited Cashiers Check Required For All Jewelry And

Sold

Exceptional Tiffany and Co. Platinum, Diamond and Fire Opal Necklace (1 of 9)

Exceptional Tiffany and Co. Platinum, Diamond and Fire Opal Necklace DESCRIPTION: Elegant Tiffany & Co. This gorgeous necklace is crafted in .950 platinum and highlights earth mined natural diamonds and one fire opal gemstone. The highlight of the necklace is the fire

Sold

Very Rare Tiffany Fire Opal Diamond Platinum Dangles (1 of 14)

Very Rare Tiffany Fire Opal Diamond Platinum Dangles Very Rare Tiffany & Co. 32ct+ Cherry Fire Opal 2.50ctw Diamond Extra Long Platinum Dangle Earrings w/ BoxDescription:Amazing presentation on these 3inch+ long articulated platinum dangles, featuring f

Sold

Lot of Carved Jade Belt Buckle, Opal Quan Yin Figurine & Fingernail Protectors (1 of 11)

Lot of Carved Jade Belt Buckle, Opal Quan Yin Figurine & Fingernail Protectors Lot of Carved Jade Belt Buckle, Opal Quan Yin Figurine & Fingernail Protectors. (1) Hand-Carved Jade double dragon heads belt buckle measures 4 1/2" length x 1 1/14" wide. (1) Hand- Carved Opal Quan Y

Sold

Piaget, Lady's Diamond, Sapphire & Opal White Go (1 of 2)

Piaget, Lady's Diamond, Sapphire & Opal White Go Piaget, Lady's Diamond, Sapphire & Opal White Gold Wristwatch, Circa 1972 Case: 35 x 31 mm,18k white gold, two body, back secured with two screws, initials and date of 1972, bezel set with round d

Sold

A Platinum, Black Opal and Diamond Pendant, 15.40 dwts. (1 of 1)

A Platinum, Black Opal and Diamond Pendant, 15.40 dwts.A Platinum, Black Opal and Diamond Pendant, containing one oval cabochon cut black opal measuring approximately 29.00 x 21.00 x 8.84 mm and 52 round brilliant cut diamonds weighing approximately 5.00

Sold

AN EMERALD, OPAL AND DIAMOND NECKLACE AND EARRINGS SUITE the necklace comprising two strands of (1 of 2)

AN EMERALD, OPAL AND DIAMOND NECKLACE AND EARRINGS SUITE the necklace comprising two strands of AN EMERALD, OPAL AND DIAMOND NECKLACE AND EARRINGS SUITE the necklace comprising two strands of alternating cabochon opals, emeralds and diamond clusters, suspending a cabochon emerald pendant in a do

Sold

MARINA B., BLACK OPAL, DIAMOND AND MULTIGEM 'FAUNA' EARRINGS (1 of 2)

MARINA B., BLACK OPAL, DIAMOND AND MULTIGEM 'FAUNA' EARRINGS MARINA B., BLACK OPAL, DIAMOND AND MULTIGEM 'FAUNA' EARRINGS Set with black opal inlay, heart shaped cabochon chrysoprase, round brilliant cut diamonds, and onyx, folding posts with clip backs. 18 kar

Sold

Very Colorful Aprx 22ct GIA Natural Opal 1ctw Fine Diamond Heavy 14k Gold Vintage Ring (1 of 13)

Very Colorful Aprx 22ct GIA Natural Opal 1ctw Fine Diamond Heavy 14k Gold Vintage Ring Title: Very Colorful Approx 22ct GIA Natural Opal 1ctw Fine Diamond Heavy 14k Gold Vintage Ring Description: This incredibly colorful natural opal calculates to approx. 22cts & is haloed in about 1ct

Sold

Important vase ''opal phenomenon Gre 358'' (1 of 3)

Important vase ''opal phenomenon Gre 358''Important vase ''opal phenomenon Gre 358'' Franz HofstÃ¶tter (design of form and decoration), Loetz Witwe, KlostermÃ¼hle, for the World's Fair in Paris 1900 Colorless glass with thin opal underlay

Sold

Antique 14K Gold Necklace with 3 Black Opals and 2 Mine Cut Diamonds (1 of 20)

Antique 14K Gold Necklace with 3 Black Opals and 2 Mine Cut Diamonds Antique 14K Yellow Gold Necklace with three black opals, most likely from the Lightening Ridge area of Australia and two 3mm white old mine cut, bezel set diamonds. The topmost opal cabochon is approx

Sold

Arts and Crafts Black Opal, Diamond, Enamel, Gol (1 of 3)

Arts and Crafts Black Opal, Diamond, Enamel, Gol Arts and Crafts Black Opal, Diamond, Enamel, Gold Necklace, Marcus & Co. The necklace

Sold

Marina B, 'Novia' opal, sapphire, onyx earrings (1 of 4)

Marina B, 'Novia' opal, sapphire, onyx earrings Marina B 'Novia' opal, sapphire, and black onyx earrings Each set with cushion and oval opals, enhanced by cabochon black onyx, and pave-set circular-cut sapphires 18k yellow gold Signed Marina B, num

Sold

An Art Deco single stone black opal ring, (1 of 3)

An Art Deco single stone black opal ring,An Art Deco single stone black opal ring, An Art Deco single stone black opal ring, with diamond set shoulders. A circular tallow cabochon cut black opal, milligrain set to each shoulder, to a ridged

TOP