Opal

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2.16ct Natural Ethiopian Welo Black Smoked Faceted Opal, 11EB: This fully faceted finished opal specimen displays vivid shifting play of color across polished geometric facets within its 10x7.8x6.1mm calibrated dimensions, the dark base body amplifies light movem

2026

2.16ct Natural Ethiopian Welo Black Smoked Faceted Opal, 11EB

ThousandPlanetSathorn, Bangkok

1.34ct Natural Ethiopian Welo Black Smoked Faceted Opal, 19EB: This fully faceted finished opal specimen displays vivid shifting play of color across polished geometric facets within its 9.7x6.4x4.9mm calibrated dimensions, the dark base body amplifies light move

2026

1.34ct Natural Ethiopian Welo Black Smoked Faceted Opal, 19EB

ThousandPlanetSathorn, Bangkok

1.53ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 8FL: 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 10x8x4mm. The black smoke treatment deepens

2026

1.53ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 8FL

ThousandPlanetSathorn, Bangkok

1.62ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 22FL: 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 10.7x8x3.5mm. The black smoke treatment deep

2026

1.62ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 22FL

ThousandPlanetSathorn, Bangkok

2.94ct Natural Ethiopian Welo Black Smoked Faceted Opal, 14EB: This fully faceted finished opal specimen displays vivid shifting play of color across polished geometric facets within its 13.2x10x5.3mm calibrated dimensions, the dark base body amplifies light move

2026

2.94ct Natural Ethiopian Welo Black Smoked Faceted Opal, 14EB

ThousandPlanetSathorn, Bangkok

8.47ct Natural Australian Queensland Matrix Boulder Opal Rounded Square Cabochon, 69AV: Hand polished petite rounded square cushion cabochon crafted from natural Queensland matrix boulder opal, featuring deep dark speckled ironstone matrix anchored by a thick sweeping golden-amber opal v

2026

8.47ct Natural Australian Queensland Matrix Boulder Opal Rounded Square Cabochon, 69AV

ThousandPlanetSathorn, Bangkok

18.40ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 55AY: 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

18.40ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 55AY

ThousandPlanetSathorn, Bangkok

1.38ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 44FL: 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 10x7.7x4mm. The black smoke treatment deepen

2026

1.38ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 44FL

ThousandPlanetSathorn, Bangkok

27.68ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 84AY: 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

27.68ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 84AY

ThousandPlanetSathorn, Bangkok

44.25ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 48AY: 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

44.25ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 48AY

ThousandPlanetSathorn, Bangkok

1.58ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 82AK: 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 11.5x8.3x3.5mm. The black smoke treatment de

2026

1.58ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 82AK

ThousandPlanetSathorn, Bangkok

90.11ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 35AX: 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

90.11ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 35AX

ThousandPlanetSathorn, Bangkok

96.13ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 2AX: 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

96.13ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 2AX

ThousandPlanetSathorn, Bangkok

43.88ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 13AY: 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

43.88ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 13AY

ThousandPlanetSathorn, Bangkok

74ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 34AX: 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

74ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 34AX

ThousandPlanetSathorn, Bangkok

17.70ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 6AY: 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

17.70ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 6AY

ThousandPlanetSathorn, Bangkok

8 Antique Rings- 10K, 14K, Victorian, Opal, Iolite: The lot contains seven 10K gold rings, and one 14K gold ring. The 14K gold ring has a floral design with three small turquoise cabochons. The rest of the rings are 10K, including the 4 baby rings. The

2026

8 Antique Rings- 10K, 14K, Victorian, Opal, Iolite

Direct Auction Galleries Chicago, IL

14k Gold & Opal Ring: A 14k Gold and Opal ring. Features three oval cut prong set Opals on a high, pierced setting with scrolled design and tapered band. Marked "14k". 4.8 grams total. Slight surface wear. Size 6 1/2. ESTI

2026

14k Gold & Opal Ring

Schmidt's Antiques Inc. Since 1911Ypsilanti, MI

14k Gold, Opal & Ruby Cluster Ring: A 14k Gold, Opal and Ruby cluster ring. Features a floriform cluster setting with oval prong set Opal cabochons and round cut Ruby accents on a wide tapered band. Marked "14k", "585" and "NH". 6.2 gra

2026

14k Gold, Opal & Ruby Cluster Ring

Schmidt's Antiques Inc. Since 1911Ypsilanti, MI

BLUE OPAL CHRYSOCOLLA DRUZY FORMATIONS ROCK STONE LAPIDARY SPECIMEN: WELCOME TO HATMAN AUCTIONS! SPECIAL NOTICE: Please see photos for measurements and descriptions. ***Yes, we have in house shipping with MANY REPEAT CUSTOMERS because of our streamlined service. ****We

2026

BLUE OPAL CHRYSOCOLLA DRUZY FORMATIONS ROCK STONE LAPIDARY SPECIMEN

Col. Christie Hatman AuctioneersThayer, MO

4.71 Cts Opal & White Topaz 18KGP Designer Necklace: 1 piece of GENUINE 8X6 mm faceted Pear Shape Opal quality AAA no treatment.6 pieces of GENUINE 6X4 mm faceted Pear Shape Opals quality AAA no treatment.9 pieces of GENUINE 2.25 mm faceted Round White

2026

4.71 Cts Opal & White Topaz 18KGP Designer Necklace

U.S. Auction GalleryEncino, CA

9.15 Ct Opal & Diamond Designer Bracelet $1,520: 20 pieces of GENUINE 5X7mm oval white Indian opals quality AAA no treatment.6 pieces of GENUINE single cut diamonds, Color: I-J & Clarity:I2-I3 No treatment.12.81 grams of brass layered with 18K yello

2026

9.15 Ct Opal & Diamond Designer Bracelet $1,520

U.S. Auction GalleryEncino, CA

1.63 Ct Natural Diamond Opal Sterling Silver Designer Earrings MSRP $1,485!: Gemstone DescriptionGemstone: OpalColor: WhiteShape: OvalSize: 8X6Quantity: 2CTW: 1.45 Diamond DescriptionShape: RoundsSize: 1.1mm Quantity: 22CT: 0.18Grade: I2Color: H-I Material Information:Plating

2026

1.63 Ct Natural Diamond Opal Sterling Silver Designer Earrings MSRP $1,485!

U.S. Auction GalleryEncino, CA

2.57ct Natural Ethiopian Welo Faceted Opal, 10EB: This expertly faceted finished opal holds soft shifting internal light phenomena visible across polished reflective planes within its 12.1x7.2x6.8mm calibrated measurements, precise faceting structure

2026

2.57ct Natural Ethiopian Welo Faceted Opal, 10EB

ThousandPlanetSathorn, Bangkok

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Opal Auctions

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

1.40 Carats Pretty Peridot Gemstone - 6X6X5 mm

2 Carats Green Tourmaline - 10X6X4 mm

NO RESERVE Loose Gemstones

Fantasy Jewelry

Starts on:

Muscat, Muscat, AE

1 hr Left

4.26 Ct Pear Aquamarine 9K Gold Ring

6.79 Ct Pear Aquamarine 9K Gold Pendant

4.24 Ct Pear Tourmaline 9K Gold Ring

Exquisite 9K Gold Gemstone Jewelry Collection

Ends from:

New York, NY, US

18K Emerald and Diamond Halo Ring Signed Iliana

Man's Blue Sapphire Ring with Jubilee Shoulders

Ruby and Diamond Dangling Earrings

Hot Days Plus Hotter Jewels Equals Cool Deals

Bidfair Fine Jewelry

Starts on:

Vero Beach, FL, US

4 hrs Left

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