Rocks, Minerals & Fossils

OPAL First Image

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OPAL First Image

OPAL

Total Sales8 Sold

Median Sale Price

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Unmounted Opal Cabochon (1 of 3)

Unmounted Opal Cabochon

Michaan's Auctions

Feb 12, 2026

Unmounted Opal Cabochon (1 of 4)

Unmounted Opal Cabochon

Michaan's Auctions

Feb 12, 2026

1.57ct AFRICAN CLEAR OPAL OVAL CABOCHON CUT NATURAL RARE BEAUTIFUL COLOR PLAY (1 of 2)

1.57ct AFRICAN CLEAR OPAL OVAL CABOCHON CUT NATURAL RARE BEAUTIFUL COLOR PLAY

Feb 12, 2026

2.21ct Natural Multicolor White Opal, Oval, Transparent (1 of 3)

2.21ct Natural Multicolor White Opal, Oval, Transparent

Weatherham Estate Treasures

Feb 27, 2026

1.57ct AFRICAN CLEAR OPAL OVAL CABOCHON CUT NATURAL RARE BEAUTIFUL COLOR PLAY (1 of 2)

1.57ct AFRICAN CLEAR OPAL OVAL CABOCHON CUT NATURAL RARE BEAUTIFUL COLOR PLAY

Mar 19, 2026

2.21ct LOOSE OVAL CABOCHON NATURAL OPAL (1 of 2)

2.21ct LOOSE OVAL CABOCHON NATURAL OPAL

Feb 12, 2026

1.57ct AFRICAN CLEAR OPAL OVAL CABOCHON CUT NATURAL (1 of 2)

1.57ct AFRICAN CLEAR OPAL OVAL CABOCHON CUT NATURAL

Mar 01, 2026

6.25CT NATURAL WHITE MULTI COLORED OPAL CABOCHON (1 of 2)

6.25CT NATURAL WHITE MULTI COLORED OPAL CABOCHON

Mar 01, 2026

2.21ct LOOSE OVAL CABOCHON NATURAL OPAL (1 of 2)

2.21ct LOOSE OVAL CABOCHON NATURAL OPAL

Mar 19, 2026

Natural Multi Color Opal 7.37 Ct. Oval Cabochon Shape 15.6 x 12.2 Mm Gemstone From Ethiopia (1 of 3)

Natural Multi Color Opal 7.37 Ct. Oval Cabochon Shape 15.6 x 12.2 Mm Gemstone From Ethiopia

Treasure of Gems & Jewelry

Feb 15, 2026

Unmounted Opal Cabochon (1 of 3)

Unmounted Opal Cabochon

Michaan's Auctions

Feb 12, 2026

Natural Multi Color Opal 4.13 Ct. Oval Cabochon Shape 16 x 9.5 Mm Gemstone From Ethiopia (1 of 3)

Natural Multi Color Opal 4.13 Ct. Oval Cabochon Shape 16 x 9.5 Mm Gemstone From Ethiopia

Treasure of Gems & Jewelry

4 days Left

1.47ct EXCELLENT OVAL CABOCHON CUT NATURAL UNTREATED OPAL (1 of 2)

1.47ct EXCELLENT OVAL CABOCHON CUT NATURAL UNTREATED OPAL

Mar 19, 2026

Natural Multi Color Opal 1.29 Ct. Oval Cabochon Shape 7.9 x 6.4 Mm Gemstone from Ethiopia (1 of 3)

Natural Multi Color Opal 1.29 Ct. Oval Cabochon Shape 7.9 x 6.4 Mm Gemstone from Ethiopia

Treasure of Gems & Jewelry

Feb 15, 2026

1.47ct EXCELLENT OVAL CABOCHON CUT NATURAL UNTREATED OPAL (1 of 2)

1.47ct EXCELLENT OVAL CABOCHON CUT NATURAL UNTREATED OPAL

Feb 12, 2026

LOOSE NATURAL UNTREATED ROUND CUT CABOCHON OPAL Sale is for 1 round cut cabochon opal Opal measures (1 of 2)

LOOSE NATURAL UNTREATED ROUND CUT CABOCHON OPAL Sale is for 1 round cut cabochon opal Opal measures

Mar 05, 2026

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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Christopher Walling Gold and Opal Ring (1 of 2)

Christopher Walling Gold and Opal Ring 18 kt., one oval opal ap. 7.00 cts., signed C. Walling, ap. 15.3 dwts. Size 7. * Opal: dark gray, rainbow large play-of-color, few faint crazing lines, reverse with visible host rock, good luste

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MARGOT MCKINNEY: A PAIR OF 18K GOLD, OPAL, DIAMOND AND GEM-SET EARRINGS (1 of 2)

MARGOT MCKINNEY: A PAIR OF 18K GOLD, OPAL, DIAMOND AND GEM-SET EARRINGS MARGOT MCKINNEY: A PAIR OF 18K GOLD, OPAL, DIAMOND AND GEM-SET EARRINGS Designed as floral-inspired clusters, set with oval and pear-shaped cabochon opals, accented across with round, pear-shaped and

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limited edition 18 karat gold black opal dial (1 of 5)

limited edition 18 karat gold black opal dial mens limited edition 18 karat gold 36 mm in diameter opal dial design by mira pars

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