Agate Gems

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4.92 Carats Natural Ethiopian Welo Opal - Oval Cabochon Loose Gemstone, 25XB: Natural oval cabochon Welo opal, sourced from the premium Welo deposit in Ethiopia. This exceptional single stone features a translucent, milky white base alive with vivid, full-spectrum play-of-color

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4.92 Carats Natural Ethiopian Welo Opal - Oval Cabochon Loose Gemstone, 25XB

Est. $30-$60

14.83ct Boulder Opal Cabochon - Soft Pastel Play-of-Color Specimen, 44XM: This 14.83ct boulder opal cabochon, measuring 24x16mm, is a striking example of Australia's iconic gemstone, showcasing the delicate beauty of nature's artistry. The freeform triangular cabochon is po

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14.83ct Boulder Opal Cabochon - Soft Pastel Play-of-Color Specimen, 44XM

Est. $60-$120

3.41 Carats Natural Ceylon Blue Sapphire - Mixed Cut Faceted Loose Gemstone Lot, 75WE: Natural mixed-cut faceted Ceylon blue sapphire lot, sourced from the legendary Sri Lankan (Ceylon) sapphire deposits. This curated collection features exceptional sapphires with vivid, saturated royal

2026

3.41 Carats Natural Ceylon Blue Sapphire - Mixed Cut Faceted Loose Gemstone Lot, 75WE

2.37 Carats Natural Ethiopian Welo Opal - Oval Cabochon Loose Gemstone, 27XB: Natural oval cabochon Welo opal, sourced from the premium Welo deposit in Ethiopia. This exceptional single stone features a translucent, milky white base alive with vivid, full-spectrum play-of-color

2026

2.37 Carats Natural Ethiopian Welo Opal - Oval Cabochon Loose Gemstone, 27XB

12.85 Carats Neon Play-of-Color Opal Selection - Natural Ethiopian Cabochons - 8 to 10 mm, 12XE: This luminous selection of opals radiates a dynamic spectrum of neon hues, with flashes of electric green, vivid orange, and spectral blue dancing across each dome. Their translucent base allows the i

21 hrs Left

12.85 Carats Neon Play-of-Color Opal Selection - Natural Ethiopian Cabochons - 8 to 10 mm, 12XE

Est. $60-$120

4.28 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 15.8x10.5mm, 15XM: This magnificent 4.28-carat Koroit boulder opal cabochon is a breathtaking display of nature's artistry, defined by electrifying bands of neon green and royal blue play-of-color that swirl around a wa

21 hrs Left

4.28 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 15.8x10.5mm, 15XM

Est. $80-$160

33.02 Carats Pastel Pink Kunzite Selection - Natural Afghan Stones 9-14mm, 68XH: This soft, luminous selection of kunzite gems exudes delicate elegance in shades of pale pink, lilac, and icy rose. Each stone displays impressive brilliance with precision faceting that highlights ku

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33.02 Carats Pastel Pink Kunzite Selection - Natural Afghan Stones 9-14mm, 68XH

Est. $100-$200

7.493 Carats Violet and Yellow Ametrine - Natural Bolivian Gemstone, LZ280: This exceptional 7.493 carat octagon step-cut ametrine presents a masterful fusion of saturated violet and warm golden-yellow hues, with a crisp, well-defined color boundary that is the hallmark of pr

4 days Left

7.493 Carats Violet and Yellow Ametrine - Natural Bolivian Gemstone, LZ280

Est. $100-$200

3.82 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 12.8x9.5mm, 7XM: This exceptional 3.82-carat Koroit boulder opal cabochon is a natural geological masterpiece, featuring a dense, intricate matrix of swirling chocolate-brown and deep plum ironstone, interwoven with v

4 days Left

3.82 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 12.8x9.5mm, 7XM

Est. $60-$120

3.65 Carats Iridescent Mystic Topaz - Heart Cut Natural Stone - 10.0 x 9.9 x 6.8 mm, 18WC: Radiating a kaleidoscope of vibrant hues, this heart-cut mystic topaz dazzles with shifting flashes of violet, teal, gold, and magenta. Its dramatic faceting and highly polished surface create a mesme

4 days Left

3.65 Carats Iridescent Mystic Topaz - Heart Cut Natural Stone - 10.0 x 9.9 x 6.8 mm, 18WC

Est. $30-$60

4.45 Carats Oval Cabochon Opal - Natural Ethiopian Stone 12.3x10.2x7.9mm, 23XH: This richly domed Welo opal glows with an ethereal blend of soft lavender, peach pink, and icy aqua hues, revealed in flashes across its milky body. The color play is smooth and atmospheric, creating

21 hrs Left

4.45 Carats Oval Cabochon Opal - Natural Ethiopian Stone 12.3x10.2x7.9mm, 23XH

Est. $30-$60

23.81 Carats Natural Amethyst - Oval Faceted Gemstone, 85WE: Oval faceted amethyst gemstone, crafted from natural amethyst material. The stone exhibits a soft, pale lavender to lilac hue with exceptional clarity and brilliance, showcasing the characteristic tra

2026

23.81 Carats Natural Amethyst - Oval Faceted Gemstone, 85WE

10.59 Carats Neon Play-of-Color Opal Selection - Natural Ethiopian Cabochons - 8 to 9 mm, 2XE: This luminous selection of opals radiates a dynamic spectrum of neon hues, with flashes of electric green, vivid orange, and spectral blue dancing across each dome. Their translucent base allows the i

4 days Left

10.59 Carats Neon Play-of-Color Opal Selection - Natural Ethiopian Cabochons - 8 to 9 mm, 2XE

Est. $40-$80

4.38 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 12.9x9.6mm, 12XM: This striking 4.38-carat Koroit boulder opal cabochon is a natural geological masterpiece, featuring a dramatic banded ironstone matrix interwoven with vivid veins of iridescent play-of-color. The ova

21 hrs Left

4.38 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 12.9x9.6mm, 12XM

Est. $60-$120

2.25 Carats Certified Orange Pink Sapphire - Natural Ceylon Gemstone, LZ114: This striking 2.25 carat marquise-cut sapphire captivates with a delicate orange-pink hue, a rare and sought-after shade that evokes the soft glow of a tropical sunrise. The elegant marquise cut enhan

4 days Left

2.25 Carats Certified Orange Pink Sapphire - Natural Ceylon Gemstone, LZ114

Est. $100-$200

9.41 Carats Neon Play-of-Color Opal Selection - Natural Ethiopian Cabochons - 10 to 11 mm, 72XE: This luminous selection of opals radiates a dynamic spectrum of neon hues, with flashes of electric green, vivid orange, and spectral blue dancing across each dome. Their translucent base allows the i

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9.41 Carats Neon Play-of-Color Opal Selection - Natural Ethiopian Cabochons - 10 to 11 mm, 72XE

Est. $40-$80

38.40 Carats Winton Boulder Opal Rough Slab - Natural Australian Stone, 45XP: This substantial Winton boulder opal rough slab showcases a captivating patchwork of ethereal sky-blue, aqua-green, and soft lavender play-of-color, embedded within its natural ironstone host rock. Me

2026

38.40 Carats Winton Boulder Opal Rough Slab - Natural Australian Stone, 45XP

3.63 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 11.3x9.2mm, 10XM: This exceptional 3.63-carat Koroit boulder opal cabochon is a natural work of art, featuring vivid veins of electric blue and iridescent play-of-color that snake through a warm, earthy ironstone matri

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3.63 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 11.3x9.2mm, 10XM

Est. $80-$160

10.12 Carats Neon Play-of-Color Opal Selection - Natural Ethiopian Cabochons - 10 to 12 mm, 58XE: This luminous selection of opals radiates a dynamic spectrum of neon hues, with flashes of electric green, vivid orange, and spectral blue dancing across each dome. Their translucent base allows the i

21 hrs Left

10.12 Carats Neon Play-of-Color Opal Selection - Natural Ethiopian Cabochons - 10 to 12 mm, 58XE

Est. $30-$60

13.08 Ct Natural Honey Dendrite Agate Hexagon Cut: weight - 13.08 Ct / Size - 18.50 x 16.30 x 7.30 mm / Shape - Excellent Hexagon Cut / Origin - Brazil / Treatment - None

Apr 23, 2026

13.08 Ct Natural Honey Dendrite Agate Hexagon Cut

Est. $75-$150

2.46 Carats Neon Play-of-Color Ethiopian Welo Opal - Natural Loose Gemstone, 48BH: This stunning 2.46ct Ethiopian Welo opal captivates with a vivid, kaleidoscopic play-of-color that radiates across its polished pear-shaped cabochon. Blazing flashes of hot pink, electric lime green,

2026

2.46 Carats Neon Play-of-Color Ethiopian Welo Opal - Natural Loose Gemstone, 48BH

10.40 Carats Multicolor Welo Opal Selection - Natural Ethiopian Stones, 7-9mm, 16XK: A kaleidoscope of shifting fire dances across this glowing selection of Welo opals, offering flashes of electric green, neon pink, oceanic blue, and sunlit orange. The stones exhibit that signature et

4 days Left

10.40 Carats Multicolor Welo Opal Selection - Natural Ethiopian Stones, 7-9mm, 16XK

Est. $60-$120

Ancient Rock Crystal Stamp Seal - Near Eastern Anthropomorphic Figure, 63ZR: Carved from translucent pale rock crystal, this oval intaglio stamp seal depicts a seated anthropomorphic figure in raised relief, with stylized linear details defining the figure's headdress, torso,

4 days Left

Ancient Rock Crystal Stamp Seal - Near Eastern Anthropomorphic Figure, 63ZR

Est. $50-$100

12.09 Ct Natural Dendrite Agate Trillion Cut: weight - 12.09 Ct / Size - 17.40 x 17.10 x 7.60 mm / Shape - Excellent Trillion Cut / Origin - Brazil / Treatment - None

Apr 23, 2026

12.09 Ct Natural Dendrite Agate Trillion Cut

Est. $75-$150

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AMETHYST DISPLAY ROCK STONE LAPIDARY SPECIMEN

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FOSSILS, RARE ROCKS, CRYSTALS, GEMS, JEWELRY

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GENUINE STONE JEWELRY BLOWOUT SALE!

Col. Christie Hatman Auctioneers

Started:

Thayer, MO, US

High-relief engraved gilt dragon ornament

Shoushan stone carving of Maitreya Buddha figurine

Pure copper high-relief engraved gold-painted galloping horse ornament

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Top & Rare Asian Antiques & Works of Art

Genki Forest Auctions

Started:

New York, NY, US

Agate Gems

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