Opal

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1.85 Carats Multicolor Flash Welo Opal Oval Cabochon - Natural Ethiopian Stone, 79XB: This exceptional Welo opal cabochon displays a breathtaking play of color, with vivid, sweeping flashes of electric green and warm sunset orange moving across its milky, translucent base. Measuring 10

2026

1.85 Carats Multicolor Flash Welo Opal Oval Cabochon - Natural Ethiopian Stone, 79XB

Lazo HeritageSathorn, Bangkok

8.75 Carats Neutral Matrix Boulder Opal Cushion Cabochon - Natural Australian Stone, 11XC: This unique boulder opal cabochon, measuring 15.7 x 11.2 x 5.5 mm, presents a stunning painterly composition in neutral tones. Polished into a smooth cushion shape, the stone features a creamy pale ye

2026

8.75 Carats Neutral Matrix Boulder Opal Cushion Cabochon - Natural Australian Stone, 11XC

Lazo HeritageSathorn, Bangkok

56.84ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 8YL: 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

56.84ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 8YL

Lazo HeritageSathorn, Bangkok

1.26ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 91WP: 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 10.7x8.7x3.0mm. The black smoke treatment de

2026

1.26ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 91WP

Lazo HeritageSathorn, Bangkok

52.24ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 4YL: 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

52.24ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 4YL

Lazo HeritageSathorn, Bangkok

3.02 Carats Natural Ethiopian Welo Blue Trillion Cabochon Opal Loose Gemstone, 96WS: This smooth domed trillion cabochon Ethiopian Welo opal boasts a soft translucent sky-blue base with sweeping vivid play-of-color featuring lush lime green, golden yellow and faint orange iridescent f

2026

3.02 Carats Natural Ethiopian Welo Blue Trillion Cabochon Opal Loose Gemstone, 96WS

Lazo HeritageSathorn, Bangkok

Opal & Diamond Pendant / Necklace 10Kt.: Ladies 10Kt Yellow Gold Opal & Diamond Pendant / Necklace. This Necklace has Charming Pendant with Opal And Sparkling Diamonds. Diamonds weight: 0.06ctw. Necklace length: 18.00"

2026

Opal & Diamond Pendant / Necklace 10Kt.

AWS AuctioneersLos Angeles, CA

A Navajo Bear Fetish Pendant in 14K: 14K yellow gold Bear fetish pendant by Navajo artist Steeve Grant, featuring opal, onyx, and coral mosaic inlay, signed, 2 in. x 2 in., 14.9 grams

2026

A Navajo Bear Fetish Pendant in 14K

Alex CooperTowson, MD

Coomi, Opal, Diamond, and Yellow Gold Necklace: Coomi, Opal, Diamond, and Yellow Gold Necklace Oval, pear, and marquise cabochon cut opals, oval orange sapphire, rose cut diamonds, and diamond slices. 18 and 20 karat yellow gold. Chain: 16 1/8 inch

2026

Coomi, Opal, Diamond, and Yellow Gold Necklace

Freeman'sChicago, IL

Oval Cut Natural 0.9ct Blue Opal, 8.4mm.: Oval Cut Natural 0.9ct Blue Opal, 8.4mm.

2026

Oval Cut Natural 0.9ct Blue Opal, 8.4mm.

Lunds Auctioneers & Appraisers Ltd.Victoria BC, BC

1.6ct Oval Cut Natural White Fire Opal, 10.5mm.: 1.6ct Oval Cut Natural White Fire Opal, 10.5mm.

2026

1.6ct Oval Cut Natural White Fire Opal, 10.5mm.

Lunds Auctioneers & Appraisers Ltd.Victoria BC, BC

Mint Vintage 1960s 14kt Gold Natural Opal Earrings: 14kt gold in excellent condition

2026

Mint Vintage 1960s 14kt Gold Natural Opal Earrings

Sabertooth AuctionsMurray, KY

SOLD

VINTAGE 9CT YELLOW GOLD OPAL, DIAMOND AND FIRE OPAL CLUSTER RING: VINTAGE 9CT YELLOW GOLD OPAL, DIAMOND AND FIRE OPAL CLUSTER RING Gorgeous ring featuring a central candy opal, framed by diamonds and fire opals!

2026

VINTAGE 9CT YELLOW GOLD OPAL, DIAMOND AND FIRE OPAL CLUSTER RING

Banks Jewellery Auctions Gloucestershire

1.79ct Natural Ethiopian Welo Faceted Opal, 5EB: This expertly faceted finished opal holds soft shifting internal light phenomena visible across polished reflective planes within its 12x7.2x4.5mm calibrated measurements, precise faceting structure m

2026

1.79ct Natural Ethiopian Welo Faceted Opal, 5EB

ThousandPlanetSathorn, Bangkok

$9.12ct Natural Australian Queensland Matrix Boulder Opal Cabochon, 21AV: Hand polished small rounded rectangular cushion cabochon crafted from natural Queensland matrix boulder opal, featuring dark speckled ironstone host matrix interwoven with intricate fractal opal veins$

2026

9.12ct Natural Australian Queensland Matrix Boulder Opal Cabochon, 21AV

ThousandPlanetSathorn, Bangkok

17.40ct Natural Australian Queensland Matrix Boulder Opal Cabochon, 65AT: Hand polished freeform triangular cabochon of natural Queensland matrix boulder opal, set upon fine speckled ironstone host rock crisscrossed with vivid saturated violet-purple opal vein networks form

2026

17.40ct Natural Australian Queensland Matrix Boulder Opal Cabochon, 65AT

ThousandPlanetSathorn, Bangkok

35.45ct Natural Australian Queensland Matrix Boulder Opal Cabochon, 66AT: Hand polished tapered triangular cone cabochon crafted from natural Queensland matrix boulder opal, featuring dense dark ironstone host rock laced with thick branching golden opal veining dotted with

2026

35.45ct Natural Australian Queensland Matrix Boulder Opal Cabochon, 66AT

ThousandPlanetSathorn, Bangkok

2.53ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 89AK: 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 12.7x9.1x5.2mm. The black smoke treatment de

2026

2.53ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 89AK

ThousandPlanetSathorn, Bangkok

6.02ct Natural Australian Queensland Matrix Boulder Opal Triangular Cabochon, 54AX: Hand polished sleek freeform triangular cabochon crafted from natural Queensland matrix boulder opal, featuring fine granular deep brown ironstone matrix interlaced with an intricate spiderweb network

2026

6.02ct Natural Australian Queensland Matrix Boulder Opal Triangular Cabochon, 54AX

ThousandPlanetSathorn, Bangkok

2.75ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 35FL: 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 11.2x8.9x5.6mm. The black smoke treatment de

2026

2.75ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 35FL

ThousandPlanetSathorn, Bangkok

2.18ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 63AK: 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 10.8x8.3x4.6mm. The black smoke treatment de

2026

2.18ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 63AK

ThousandPlanetSathorn, Bangkok

1.95ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 37FL: 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 11x8x4.3mm. The black smoke treatment deepen

2026

1.95ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 37FL

ThousandPlanetSathorn, Bangkok

Ross Simons Opal Blue Topaz Gold Plated Sterling Silver Ring Size 7 & Coordinating Opal Heart Stud: Ross Simons Opal Blue Topaz Gold Plated Sterling Silver Ring Size 7 & Coordinating Opal Heart Stud Earrings Pierced Box Included

2026

Ross Simons Opal Blue Topaz Gold Plated Sterling Silver Ring Size 7 & Coordinating Opal Heart Stud

Golden Age Jewelry AuctionsUrbana, OH

Opal Sterling Silver Pierced Stud Earrings Box Included: Opal Sterling Silver Pierced Stud Earrings Box Included

2026

Opal Sterling Silver Pierced Stud Earrings Box Included

Golden Age Jewelry AuctionsUrbana, OH

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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

Impressive Mid Century Viking Epic Stockholm Smoke Pine Gray Lotus Wayne Husted Art Glass Vase

GIVENCHY Vintage Designer Matte Silver G Cutout Necklace, Bracelet & Pierced Earrings Ensemble

Vintage Jewelry, Early Christmas & Unusual

Atlee Raber Auctions

Starts on:

Dundee, OH, US

4 days Left

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