Modern Fossils

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65ct Natural Siberian Seraphinite Polished Rough Slab, 78AR: This polished mineral slab is natural seraphinite originating from Siberian deposits, displaying characteristic radiating crystalline fibrous formations with layered deep forest and silvery green band

2026

65ct Natural Siberian Seraphinite Polished Rough Slab, 78AR

ThousandPlanetSathorn, Bangkok

35.52ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 3AY: 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

35.52ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 3AY

ThousandPlanetSathorn, Bangkok

71ct Natural Unheated Sri Lankan Purplish Blue Sapphire Rough, 40FC: This natural corundum rough is an unheated purplish blue sapphire sourced from Sri Lankan alluvial gem deposits, featuring an irregular natural native form with residual pale yellow-brown mineral matr

2026

71ct Natural Unheated Sri Lankan Purplish Blue Sapphire Rough, 40FC

ThousandPlanetSathorn, Bangkok

47ct Natural Brazilian Phantom Quartz Oval Cabochon Loose Gemstone, 13BM: This smoothly polished cabochon of natural phantom quartz preserves delicate layered phantom crystal formations enclosed inside transparent quartz host. The domed polished surface offers unobstructed

2026

47ct Natural Brazilian Phantom Quartz Oval Cabochon Loose Gemstone, 13BM

ThousandPlanetSathorn, Bangkok

3.69ct Natural Untreated Burmese Trapiche Sapphire Loose Gemstone, 64BE: This polished Burmese trapiche sapphire features soft milky pale base tone with distinct natural mineral growth formations within its crystalline structure, measured at calibrated dimensions of 8.8x8.

2026

3.69ct Natural Untreated Burmese Trapiche Sapphire Loose Gemstone, 64BE

ThousandPlanetSathorn, Bangkok

3.85ct Natural Brazilian Soft Sky Blue Faceted Aquamarine Loose Gemstone, 12AS: This expertly faceted aquamarine carries a gentle soft sky blue translucent body with faint fine natural internal mineral markings visible through its polished reflective facets within its 11x7.6x5.7m

2026

3.85ct Natural Brazilian Soft Sky Blue Faceted Aquamarine Loose Gemstone, 12AS

ThousandPlanetSathorn, Bangkok

180ct Natural Type A Burmese Red Skin Rim Icy Teal Jadeite Jade Sliced Rough, 10FA: This specimen is a small sliced rough pebble of untreated Type A Burmese jadeite, framed by a distinct rich reddish-brown oxidized skin rim along its polished cut face perimeter. The interior features

2026

180ct Natural Type A Burmese Red Skin Rim Icy Teal Jadeite Jade Sliced Rough, 10FA

ThousandPlanetSathorn, Bangkok

485ct Natural Type A Burmese Brown Rind Teal Jadeite Jade Sliced Rough, 12FA: This specimen is a natural split rough pebble of untreated Type A Burmese jadeite, retaining rugged weathered dark brown outer skin on its reverse side, while its polished cut face features a defined

2026

485ct Natural Type A Burmese Brown Rind Teal Jadeite Jade Sliced Rough, 12FA

ThousandPlanetSathorn, Bangkok

1.49 Carats Natural Ceylon Chrysoberyl Cat's Eye Loose Gemstone, 8AL: This polished Ceylon chrysoberyl cabochon displays a sharp, distinct silvery chatoyant band running across its smooth surface, formed by dense aligned microscopic rutile inclusions inherent to genuine

2026

1.49 Carats Natural Ceylon Chrysoberyl Cat's Eye Loose Gemstone, 8AL

ThousandPlanetSathorn, Bangkok

1.94ct Natural Siamese 6-Ray Black Star Sapphire Loose Gemstone, 49BD: This polished star sapphire originates from classic Siamese mining deposits, featuring a deep dark crystalline base with fine native mineral traces trapped within its structure, sized at calibrated 8.

2026

1.94ct Natural Siamese 6-Ray Black Star Sapphire Loose Gemstone, 49BD

ThousandPlanetSathorn, Bangkok

130.68ct Natural Unheated Sri Lankan Purplish Blue Sapphire Rough, 27FC: This natural corundum rough is an unheated purplish blue sapphire sourced from Sri Lankan alluvial gem deposits, featuring an irregular natural native form with residual pale yellow-brown mineral matr

2026

130.68ct Natural Unheated Sri Lankan Purplish Blue Sapphire Rough, 27FC

ThousandPlanetSathorn, Bangkok

$2.31ct Natural Mexican Lime Green Faceted Sphene Loose Gemstone, 60BA: This precisely faceted sphene exhibits vivid translucent lime green body tone, featuring fine natural mineral veils and tiny scattered crystalline micro-inclusions trapped within its high-refractive c$

2026

2.31ct Natural Mexican Lime Green Faceted Sphene Loose Gemstone, 60BA

ThousandPlanetSathorn, Bangkok

38.25ct Natural Unheated Sri Lankan Purplish Blue Sapphire Rough, 62FC: This natural corundum rough is an unheated purplish blue sapphire sourced from Sri Lankan alluvial gem deposits, featuring an irregular natural native form with residual pale yellow-brown mineral matr

2026

38.25ct Natural Unheated Sri Lankan Purplish Blue Sapphire Rough, 62FC

ThousandPlanetSathorn, Bangkok

1.00ct Natural Ceylon Rich Royal Blue Faceted Blue Sapphire Loose Gemstone, 49BC: This fully polished finished sapphire displays rich saturated royal blue body tone, with fine natural microscopic mineral specks scattered throughout its transparent crystal interior within its 7x5.2x

2026

1.00ct Natural Ceylon Rich Royal Blue Faceted Blue Sapphire Loose Gemstone, 49BC

ThousandPlanetSathorn, Bangkok

28ct Natural Unheated Sri Lankan Purplish Blue Sapphire Rough, 73FC: This natural corundum rough is an unheated purplish blue sapphire sourced from Sri Lankan alluvial gem deposits, featuring an irregular natural native form with residual pale yellow-brown mineral matr

2026

28ct Natural Unheated Sri Lankan Purplish Blue Sapphire Rough, 73FC

ThousandPlanetSathorn, Bangkok

53.48ct Natural Unheated Sri Lankan Purplish Blue Sapphire Rough, 43FC: This natural corundum rough is an unheated purplish blue sapphire sourced from Sri Lankan alluvial gem deposits, featuring an irregular natural native form with residual pale yellow-brown mineral matr

2026

53.48ct Natural Unheated Sri Lankan Purplish Blue Sapphire Rough, 43FC

ThousandPlanetSathorn, Bangkok

2.91ct Natural Siamese 6-Ray Black Star Sapphire Loose Gemstone, 27BD: This polished star sapphire originates from classic Siamese mining deposits, featuring a deep dark crystalline base with fine native mineral traces trapped within its structure, sized at calibrated 8.

2026

2.91ct Natural Siamese 6-Ray Black Star Sapphire Loose Gemstone, 27BD

ThousandPlanetSathorn, Bangkok

90.68ct Natural Unheated Sri Lankan Purplish Blue Sapphire Rough, 56FC: This natural corundum rough is an unheated purplish blue sapphire sourced from Sri Lankan alluvial gem deposits, featuring an irregular natural native form with residual pale yellow-brown mineral matr

2026

90.68ct Natural Unheated Sri Lankan Purplish Blue Sapphire Rough, 56FC

ThousandPlanetSathorn, Bangkok

3.72ct Natural Untreated Burmese Trapiche Sapphire Loose Gemstone, 62BE: This polished Burmese trapiche sapphire features soft milky pale base tone with distinct natural mineral growth formations within its crystalline structure, measured at calibrated dimensions of 7.7x5m

2026

3.72ct Natural Untreated Burmese Trapiche Sapphire Loose Gemstone, 62BE

ThousandPlanetSathorn, Bangkok

39ct Natural Unheated Sri Lankan Purplish Blue Sapphire Rough, 41FC: This natural corundum rough is an unheated purplish blue sapphire sourced from Sri Lankan alluvial gem deposits, featuring an irregular natural native form with residual pale yellow-brown mineral matr

2026

39ct Natural Unheated Sri Lankan Purplish Blue Sapphire Rough, 41FC

ThousandPlanetSathorn, Bangkok

63.45ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 83AY: 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

63.45ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 83AY

ThousandPlanetSathorn, Bangkok

Natural Green Tourmaline Gemstones 2.70 Ct. Octagon Shape 24 x 4.5 Mm.: Product ID: 807245167 Product Name: Natural Tourmaline Weight: 2.70 CT. Size: 24 x 4.5 x 2.4 MM. Shape: Octagon Color: Green Clarity:VSI Luster: Good Gems Origin: Nigeria Treatment: Unheated Crystal S

2026

Natural Green Tourmaline Gemstones 2.70 Ct. Octagon Shape 24 x 4.5 Mm.

Treasure of Gems & JewelryLake Charles, LA

Natural Bi Color Ametrine Gemstones 2.75 Ct. Baguette Shape 11.1 x 6.2 Mm.: Product ID: 800408510 Product Name: Natural Ametrine Weight: 2.75 CT. Size: 11.1 x 6.2 x 4.8 MM. Shape: Baguette Color: Bi Color Clarity:VSI Luster: Good Gems Origin: Bolivia Treatment: Unheated Cryst

2026

Natural Bi Color Ametrine Gemstones 2.75 Ct. Baguette Shape 11.1 x 6.2 Mm.

Treasure of Gems & JewelryLake Charles, LA

Natural Orangish Red Spessartine Garnet Gemstones 1.57 Ct. Pear Shape 7 x 6.5 Mm.: Product ID: 802937229 Product Name: Natural Garnet Weight: 1.57 CT. Size: 7 x 6.5 x 4.4 MM. Shape: Pear Shape Color: Orangish Red Clarity:VSI Luster: Good Gems Origin: Namibia Treatment: Unheated Crys

2026

Natural Orangish Red Spessartine Garnet Gemstones 1.57 Ct. Pear Shape 7 x 6.5 Mm.

Treasure of Gems & JewelryLake Charles, LA

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Fossils Auctions

Saber-Toothed Tiger Fossil Skull, Late Miocene — Complete Dentition

Mimbres Black-on-White Pottery Bowl - Standing Woman, Kill Hole

Persian Siljuk Bronze Lamp Stand, Khorasan Region

Fine Fossils, Native American, Asian, Ethno

Artemis Fine Arts

Starts on:

Louisville, CO, US

6 days Left

Michoacan Pottery Figure - Seated Dignitary in Headdress

Prehistoric Complete Oreodont Femur Bone Fossil

18th c. Italian Engraving after Reni - Apollo & Aurora

VARIETY SALE Pre-Columbian, Ethnographic Art

Artemis Fine Arts

Starts on:

Louisville, CO, US

4 11/16" Thebes, Dickey COA, Calhoun Co., Illinois, Found Near the Illinois River

18" x 8 1/2" Large Mammoth Jaw and Tooth Fossil, Recovered from Alaskan Permafrost

10 3/4" Pre-Columbian Moche Culture Stirrup Vessel, Northern Coastal Peru

Pre-Columbian, Native American Artifacts

Heartland Artifact Auctions

Starts on:

Quincy, IL, US

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