Opal

(9,000+ price results)

Sort by:

Most Relevant

3.37 Carats Koroit Yowah Opal Cabochon - Natural Australian Single Stone, 77XL: This striking Koroit Yowah opal cabochon, measuring 12.5x8.8mm, features a dense, textured ironstone matrix in layered tones of deep chocolate brown, warm tan, and jet black. The stone's internal land

2026

3.37 Carats Koroit Yowah Opal Cabochon - Natural Australian Single Stone, 77XL

Lazo HeritageSathorn, Bangkok

3.08 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 12.8x9.3mm, 2XM: This captivating 3.08-carat Koroit boulder opal cabochon is a natural work of geological art, featuring delicate, scattered veins of vivid green, blue, and iridescent play-of-color that glow against a

2026

3.08 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 12.8x9.3mm, 2XM

Lazo HeritageSathorn, Bangkok

31.82ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 7YP: Natural sliced slab rough of Queensland boulder opal cutting grade, featuring rich color ironstone matrix with patterns. The face clearly reveals extensive opal veining and pocket formations running t

2026

31.82ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 7YP

Lazo HeritageSathorn, Bangkok

7.27 Carats Soft Blue and Lavender Boulder Opal Cabochon - Natural Australian Stone, 63XM: This substantial boulder opal cabochon features a soft, milky base of pale blue and lavender, infused with delicate, iridescent undertones that shift with light. The stone's triangular form showcases

2026

7.27 Carats Soft Blue and Lavender Boulder Opal Cabochon - Natural Australian Stone, 63XM

Lazo HeritageSathorn, Bangkok

An opal, diamond and blackened silver pendant-necklace: of flower motif, the pendant designed with six faceted opals weighing in total 8.40 carats, framed with numerous round brilliant-cut diamonds; total diamond weight: 1.20 carats; weighing approximately

2026

An opal, diamond and blackened silver pendant-necklace

Turner Auctions + AppraisalsSouth San Francisco, CA

1.16ct Natural Ethiopian Welo Faceted Opal, 9EB: This expertly faceted finished opal holds soft shifting internal light phenomena visible across polished reflective planes within its 9.1x6.4x4.2mm calibrated measurements, precise faceting structure

2026

1.16ct Natural Ethiopian Welo Faceted Opal, 9EB

ThousandPlanetSathorn, Bangkok

1.45ct Natural Ethiopian Welo Faceted Opal, 7EB: This expertly faceted finished opal holds soft shifting internal light phenomena visible across polished reflective planes within its 10x6.8x4.6mm calibrated measurements, precise faceting structure m

2026

1.45ct Natural Ethiopian Welo Faceted Opal, 7EB

ThousandPlanetSathorn, Bangkok

2.00ct Natural Ethiopian Welo Faceted Opal, 4EB: This expertly faceted finished opal holds soft shifting internal light phenomena visible across polished reflective planes within its 12.8x6.4x5.1mm calibrated measurements, precise faceting structure

2026

2.00ct Natural Ethiopian Welo Faceted Opal, 4EB

ThousandPlanetSathorn, Bangkok

0.94ct Natural Ethiopian Welo Faceted Opal, 2EB: This expertly faceted finished opal holds soft shifting internal light phenomena visible across polished reflective planes within its 9.2x6.6x4.6mm calibrated measurements, precise faceting structure

2026

0.94ct Natural Ethiopian Welo Faceted Opal, 2EB

ThousandPlanetSathorn, Bangkok

0.89ct Natural Ethiopian Welo Faceted Opal, 8EB: This expertly faceted finished opal holds soft shifting internal light phenomena visible across polished reflective planes within its 9.4x5.9x4.2mm calibrated measurements, precise faceting structure

2026

0.89ct Natural Ethiopian Welo Faceted Opal, 8EB

ThousandPlanetSathorn, Bangkok

1.24ct Natural Ethiopian Welo Faceted Opal, 1EB: This expertly faceted finished opal holds soft shifting internal light phenomena visible across polished reflective planes within its 10.2x6x4.8mm calibrated measurements, precise faceting structure m

2026

1.24ct Natural Ethiopian Welo Faceted Opal, 1EB

ThousandPlanetSathorn, Bangkok

1.25ct Natural Ethiopian Welo Faceted Opal, 6EB: This expertly faceted finished opal holds soft shifting internal light phenomena visible across polished reflective planes within its 10.7x6.8x4.4mm calibrated measurements, precise faceting structure

2026

1.25ct Natural Ethiopian Welo Faceted Opal, 6EB

ThousandPlanetSathorn, Bangkok

19.24ct Natural Australian Queensland Matrix Boulder Opal Cabochon, 69AT: Hand polished rectangular cushion cabochon crafted from unmodified Queensland matrix boulder opal, featuring dense dark ironstone host threaded with broad, luminous golden opal veins shot through with

2026

19.24ct Natural Australian Queensland Matrix Boulder Opal Cabochon, 69AT

ThousandPlanetSathorn, Bangkok

0.68ct Natural Ethiopian Welo Black Smoked Faceted Opal, 20EB: This fully faceted finished opal specimen displays vivid shifting play of color across polished geometric facets within its 9.1x5.4x3.8mm calibrated dimensions, the dark base body amplifies light move

2026

0.68ct Natural Ethiopian Welo Black Smoked Faceted Opal, 20EB

ThousandPlanetSathorn, Bangkok

1.15ct Natural Ethiopian Welo Black Smoked Faceted Opal, 15EB: This fully faceted finished opal specimen displays vivid shifting play of color across polished geometric facets within its 9.6x1.7x4mm calibrated dimensions, the dark base body amplifies light moveme

2026

1.15ct Natural Ethiopian Welo Black Smoked Faceted Opal, 15EB

ThousandPlanetSathorn, Bangkok

1.29ct Natural Ethiopian Welo Black Smoked Faceted Opal, 18EB: This fully faceted finished opal specimen displays vivid shifting play of color across polished geometric facets within its 10.8x7.4x4.6mm calibrated dimensions, the dark base body amplifies light mov

2026

1.29ct Natural Ethiopian Welo Black Smoked Faceted Opal, 18EB

ThousandPlanetSathorn, Bangkok

33.35ct Natural Australian Queensland Matrix Boulder Opal Cabochon, 71AT: Hand polished freeform rectangular cushion cabochon mined from Queensland matrix boulder opal, featuring warm caramel ironstone host matrix interwoven with distinctive concentric circular opal banding

2026

33.35ct Natural Australian Queensland Matrix Boulder Opal Cabochon, 71AT

ThousandPlanetSathorn, Bangkok

2.62ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 43FL: This fully polished Ethiopian Welo opal features a dark smoked base with vivid, sweeping play-of-color shifting across its glossy dome surface, measured at 11.5x9x4.9mm. The black smoke treatment deep

2026

2.62ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 43FL

ThousandPlanetSathorn, Bangkok

87.55ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 36AX: Natural sliced slab rough of Queensland boulder opal cutting grade, featuring rich color ironstone matrix with patterns. The face clearly reveals extensive opal veining and pocket formations running t

2026

87.55ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 36AX

ThousandPlanetSathorn, Bangkok

2.92ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 42FL: This fully polished Ethiopian Welo opal features a dark smoked base with vivid, sweeping play-of-color shifting across its glossy dome surface, measured at 11.6x9x4.8mm. The black smoke treatment deep

2026

2.92ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 42FL

ThousandPlanetSathorn, Bangkok

9.46ct Natural Australian Queensland Matrix Boulder Opal Triangular Cabochon, 46AV: Hand polished symmetrical rounded triangle cabochon crafted from natural Queensland matrix boulder opal, featuring deep rich brown ironstone host partially engulfed by a vast luminous sky-blue opal po

2026

9.46ct Natural Australian Queensland Matrix Boulder Opal Triangular Cabochon, 46AV

ThousandPlanetSathorn, Bangkok

14.54ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 66AX: Natural sliced slab rough of Queensland boulder opal cutting grade, featuring rich color ironstone matrix with patterns. The face clearly reveals extensive opal veining and pocket formations running t

2026

14.54ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 66AX

ThousandPlanetSathorn, Bangkok

40.58ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 76AY: Natural sliced slab rough of Queensland boulder opal cutting grade, featuring rich color ironstone matrix with patterns. The face clearly reveals extensive opal veining and pocket formations running t

2026

40.58ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 76AY

ThousandPlanetSathorn, Bangkok

12.56ct Natural Australian Queensland Matrix Boulder Opal Rounded Rectangle Cabochon, 16AV: Hand polished compact rounded rectangular cabochon of natural Queensland matrix boulder opal, featuring deep speckled chocolate brown ironstone matrix crisscrossed with thick luminous golden amber opa

2026

12.56ct Natural Australian Queensland Matrix Boulder Opal Rounded Rectangle Cabochon, 16AV

ThousandPlanetSathorn, Bangkok

View:

24

Opal Auctions

1.97Ct Welo Black Faceted Opal Polished - Ethiopian Opal , 445E

29.90Ct Moss Agate Cabochon - Polished - 31x21mm Approx , 320E

Australian Lightning Ridge Crystal Black Opal Rough Chip Jar (Good For Display), 344B

The Aurora Treasury Gems & Jewels #3

Ksmith Heritage Auctioneers

Starts on:

Jelutong, Penang, MY

3 days Left

6.40 Cts Natural amethyst Gemstone - 12X10.5X8 mm

1.25 Carats Deep Blue Natural Aquamarine Loose Gemstone - 9X6X4 mm

Baby Pink Top quality Natural Kunzite loose Gemstone - 3.25 Carats - 9X8.5X6 mm

NO RESERVE Loose Gemstones

Fantasy Jewelry

Starts on:

Muscat, Muscat, AE

3 days Left

HAND KNAPPED ARROWHEADS ROCK STONE LAPIDARY SPECIMEN

MIXED LOT ROCK STONE LAPIDARY SPECIMEN

GARNET AND PERIDOT ROCK STONE LAPIDARY SPECIMEN

TURQUOISE TREASURES Mineral Showcase B

Col. Christie Hatman Auctioneers

Starts on:

Thayer, MO, US

2 days Left

TOP