Opal

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14 KT Gold, Black Opal, and Diamond Ring: Ring features a fiery 1 CT pear-shaped black opal cabochon and a curving band accented with three diamonds, all set in yellow gold. It is a size 6 1/4 and has a total weight of 5.9 g, including all ma

2026

14 KT Gold, Black Opal, and Diamond Ring

Olivers Auction LLCBelton, SC

A Sterling Silver and Simulated Opal Jewelry Set: A matching jewelry set consisting of a pendant necklace, a pair of earrings, and a ring, all constructed from sterling silver. Each piece features a pear-shaped cabochon that appears to be simulated w

2026

A Sterling Silver and Simulated Opal Jewelry Set

Palmer's Auction CoCampbell, NY

Vintage Montage Gemstone Quartz Ladies Watch Opal Mosaic Dial Link Bracelet Gold Tone: This is a vintage Montage "Gemstone Quartz" ladies watch featuring a genuine opal mosaic dial in a gold-tone oval case, with Roman numeral markers, matching the watch to a full link bracelet where eve

2026

Vintage Montage Gemstone Quartz Ladies Watch Opal Mosaic Dial Link Bracelet Gold Tone

Sphere Auctions LLCSun Prarie, WI

81.62ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 19YP: 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

81.62ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 19YP

Lazo HeritageSathorn, Bangkok

102.24ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 16YL: 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

102.24ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 16YL

Lazo HeritageSathorn, Bangkok

47.88ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 3YL: 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

47.88ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 3YL

Lazo HeritageSathorn, Bangkok

2.93 Carats Golden Yellow Fire Opal Oval - Natural Mexican Stone, 85XC: This luminous oval-cut Mexican fire opal captivates with its warm, honeyed yellow body tone, punctuated by subtle fiery inclusions that dance across its surface. The stone's translucent base glows wit

2026

2.93 Carats Golden Yellow Fire Opal Oval - Natural Mexican Stone, 85XC

Lazo HeritageSathorn, Bangkok

109.42ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 33YL: 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

109.42ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 33YL

Lazo HeritageSathorn, Bangkok

119.87ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 74YP: 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

119.87ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 74YP

Lazo HeritageSathorn, Bangkok

54.40ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 14YP: 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

54.40ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 14YP

Lazo HeritageSathorn, Bangkok

4.19 Carats Koroit Yowah Opal Cabochon - Natural Australian Single Stone, 72XL: This substantial Koroit Yowah opal cabochon, measuring 18x9.3x2.9mm, features a dense, textured ironstone matrix in layered tones of deep chocolate brown, warm tan, and jet black. The stone's internal

2026

4.19 Carats Koroit Yowah Opal Cabochon - Natural Australian Single Stone, 72XL

Lazo HeritageSathorn, Bangkok

3.80 Carats Natural Ethiopian Welo Blue Trillion Cabochon Opal Loose Gemstone, 94WS: This smoothly polished domed trillion cabochon Ethiopian Welo opal features a soft translucent sky-blue base, decorated with vivid sweeping play-of-color including neon lime green, golden yellow and s

2026

3.80 Carats Natural Ethiopian Welo Blue Trillion Cabochon Opal Loose Gemstone, 94WS

Lazo HeritageSathorn, Bangkok

Opal Gemstone Ring 14Kt.: Ladies 14Kt Yellow Gold Opal Ring. This Ring has A Beautiful Round Opal Gemstone In The Center. Ring Size: 6.00. Total Weight: 4.50 Grams.

2026

Opal Gemstone Ring 14Kt.

Pacific Auction HouseLos Angeles, CA

12.52 Ct Natural Blue Opal Pear Cab: weight - 12.52 Ct / Size - 18.80 x 18.00 x 5.80 mm / Shape - Excellent Pear Cab / Origin - Brazil / Treatment - None

2026

12.52 Ct Natural Blue Opal Pear Cab

Gems AuctionBangkok, TH

1.78 Ct Natural Orange Fire Opal Oval Cut: Weight - 1.78 Ct / Dimensions - 12.60 x 9.50 x 3.40 mm / Shape - Oval Cut / Color - Orange / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Heated

2026

1.78 Ct Natural Orange Fire Opal Oval Cut

Gems AuctionBangkok, TH

3.96 Ct Natural Pink Fire Opal Round Beads: Weight - 3.96 Ct / Size - 4.50 - 4.80 mm / 14 Pc's / Shape - Round Beads / Clarity - Transparent / Origin - Ethiopia / Treatment - Heated

2026

3.96 Ct Natural Pink Fire Opal Round Beads

Gems AuctionBangkok, TH

2.02 Ct Natural Blue Fire Opal Trillion Cab: Weight - 2.02 Ct / Size -10.70 x 9.60 x 4.10 mm / Shape - Trillion Cab / Color - Blue / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Heated

2026

2.02 Ct Natural Blue Fire Opal Trillion Cab

Gems AuctionBangkok, TH

2.78 Ct Natural Bicolor Fire Opal Oval Cab: Weight - 2.78 Ct / Dimensions - 11.90 x 8.90 x 5.80 mm / Shape - Oval Cab / Color - Bicolor / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Heated

2026

2.78 Ct Natural Bicolor Fire Opal Oval Cab

Gems AuctionBangkok, TH

1.92 Ct Natural Orange Fire Opal Oval Cab: Weight - 1.92 Ct / Dimensions - 10.80 x 8.80 x 4.60 mm / Shape - Oval Cab / Color - Orange / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Heated

2026

1.92 Ct Natural Orange Fire Opal Oval Cab

Gems AuctionBangkok, TH

1.29 Ct Natural Blue Fire Opal Oval Cut: Weight - 1.29 Ct / Size - 9.00 x 7.00 x 5.10 mm / Shape - Oval Cut / Color - Blue / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Heated

2026

1.29 Ct Natural Blue Fire Opal Oval Cut

Gems AuctionBangkok, TH

2.13 Ct Natural Bicolor Fire Opal Oval Cab: Weight - 2.13 Ct / Dimensions - 11.60 x 9.10 x 4.50 mm / Shape - OVal Cab / Color - Bicolor / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Heated

2026

2.13 Ct Natural Bicolor Fire Opal Oval Cab

Gems AuctionBangkok, TH

3.55 Ct Natural Black Flashing Fire Opal Oval Cab: Weight - 3.55 Ct / Size - 12.70 x 10.10 x 5.50 mm / Shape - Oval Cab / Color - Black / Transparency - Translucent / Origin - Ethiopia / Treatment - Color Smoked

2026

3.55 Ct Natural Black Flashing Fire Opal Oval Cab

Gems AuctionBangkok, TH

1.76 Ct Natural Black Flashing Fire Opal Oval Cab: Weight - 1.76 Ct / Size - 12.90 x 7.50 x 3.70 mm / Shape - Oval Cab / Color - Black / Transparency - Translucent / Origin - Ethiopia / Treatment - Color Smoked

2026

1.76 Ct Natural Black Flashing Fire Opal Oval Cab

Gems AuctionBangkok, TH

1.61 Ct Natural Black Flashing Fire Opal Oval Cab: Weight - 1.61 Ct / Size - 10.00 x 7.40 x 4.10 mm / Shape - Oval Cab / Color - Black / Transparency - Translucent / Origin - Ethiopia / Treatment - Color Smoked

2026

1.61 Ct Natural Black Flashing Fire Opal Oval Cab

Gems AuctionBangkok, TH

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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

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