Modern Fossils

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22.22ct Natural Mauritania Ruby Rough (Unheated), 95AM: This unheated Mauritania ruby rough is a captivating natural crystal specimen, featuring vivid magenta-purple ruby formations embedded in a contrasting greyish matrix. The stone's rugged, unpolished s

2026

22.22ct Natural Mauritania Ruby Rough (Unheated), 95AM

ThousandPlanetSathorn, Bangkok

3.87 Carats Multi-Color Koroit Boulder Opal - Natural Australian Stone, LZ43: This stunning 3.87 carat Koroit boulder opal, measuring 14.8mm x 10.4mm x 2.7mm, is a breathtaking canvas of natural color and pattern. Polished into a smooth oval cabochon, its face is dominated by r

2026

3.87 Carats Multi-Color Koroit Boulder Opal - Natural Australian Stone, LZ43

ThousandPlanetSathorn, Bangkok

38.93ct Natural Mauritania Ruby Rough (Unheated), 70XA: This unheated Mauritania ruby rough is a captivating natural crystal specimen, featuring vivid magenta-purple ruby formations embedded in a contrasting greyish matrix. The stone's rugged, unpolished s

2026

38.93ct Natural Mauritania Ruby Rough (Unheated), 70XA

ThousandPlanetSathorn, Bangkok

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

ThousandPlanetSathorn, Bangkok

14.66ct Natural Mauritania Ruby Rough (Unheated), 7AN: This unheated Mauritania ruby rough is a captivating natural crystal specimen, featuring vivid magenta-purple ruby formations embedded in a contrasting greyish matrix. The stone's rugged, unpolished s

2026

14.66ct Natural Mauritania Ruby Rough (Unheated), 7AN

ThousandPlanetSathorn, Bangkok

16.63ct Natural Mauritania Ruby Rough (Unheated), 90AM: This unheated Mauritania ruby rough is a captivating natural crystal specimen, featuring vivid magenta-purple ruby formations embedded in a contrasting greyish matrix. The stone's rugged, unpolished s

2026

16.63ct Natural Mauritania Ruby Rough (Unheated), 90AM

ThousandPlanetSathorn, Bangkok

17.81 Carats Deep Blue and Brown Matrix Boulder Opal Cabochon - Natural Australian Stone, 41XM: This substantial boulder opal cabochon features a dramatic, layered composition of deep blue opal interwoven with rich brown and maroon ironstone matrix, accented by milky white opal veins that flow a

2026

17.81 Carats Deep Blue and Brown Matrix Boulder Opal Cabochon - Natural Australian Stone, 41XM

ThousandPlanetSathorn, Bangkok

16.75ct Natural Mauritania Ruby Rough (Unheated), 98AM: This unheated Mauritania ruby rough is a captivating natural crystal specimen, featuring vivid magenta-purple ruby formations embedded in a contrasting greyish matrix. The stone's rugged, unpolished s

2026

16.75ct Natural Mauritania Ruby Rough (Unheated), 98AM

ThousandPlanetSathorn, Bangkok

37.64 Carats Swiss Blue Topaz Pear - Natural Brazilian Stone, LZ108: This magnificent pear-cut Swiss blue topaz radiates with a vibrant, icy blue hue that evokes the clarity of alpine lakes and glacial skies. The gem is masterfully faceted, with precisely angled surfac

2026

37.64 Carats Swiss Blue Topaz Pear - Natural Brazilian Stone, LZ108

ThousandPlanetSathorn, Bangkok

2.33 Carats Neon Blue-Green Matrix Boulder Opal - Natural Australian Stone, LZ48: This captivating 2.33 carat matrix boulder opal, measuring 11.4mm x 7.8mm x 3.1mm, is a striking example of nature's dramatic artistry. Polished into a smooth oval cabochon, its surface is dominated b

2026

2.33 Carats Neon Blue-Green Matrix Boulder Opal - Natural Australian Stone, LZ48

ThousandPlanetSathorn, Bangkok

Many Clear Quartz Points .70 lbs: Many Clear Quartz Points .70 lbs

2026

Many Clear Quartz Points .70 lbs

Auctions PlusMinneapolis, MN

Large Carved Amethyst Heart 152 Grams: Large Carved Amethyst Heart 152 Grams

2026

Large Carved Amethyst Heart 152 Grams

Auctions PlusMinneapolis, MN

Very Large Petrified Wood Heart 426 Grams: Very Large Petrified Wood Heart 426 Grams

2026

Very Large Petrified Wood Heart 426 Grams

Auctions PlusMinneapolis, MN

Flower Agate Heart .70 lbs: Flower Agate Heart .70 lbs

2026

Flower Agate Heart .70 lbs

Auctions PlusMinneapolis, MN

Ocean Jasper Heart 164 Grams: Ocean Jasper Heart 164 Grams

2026

Ocean Jasper Heart 164 Grams

Auctions PlusMinneapolis, MN

Lg Polished Ocean Jasper Heart 170 Grams: Lg Polished Ocean Jasper Heart 170 Grams

2026

Lg Polished Ocean Jasper Heart 170 Grams

Auctions PlusMinneapolis, MN

Brazilian Horn Agate 24 Grams: Brazilian Horn Agate 24 Grams

2026

Brazilian Horn Agate 24 Grams

Auctions PlusMinneapolis, MN

Selenite (Healing Crystal) Heart 52 Grams: Selenite (Healing Crystal) Heart 52 Grams

2026

Selenite (Healing Crystal) Heart 52 Grams

Auctions PlusMinneapolis, MN

Large Petrified Wooden Heart 336 Grams: Large Petrified Wooden Heart 336 Grams

2026

Large Petrified Wooden Heart 336 Grams

Auctions PlusMinneapolis, MN

Tumbled Rainforest Rhyolite .14 lbs: Tumbled Rainforest Rhyolite .14 lbs

2026

Tumbled Rainforest Rhyolite .14 lbs

Auctions PlusMinneapolis, MN

Crazy Laced Agate Slabs--261 Grams: Crazy Laced Agate Slabs--261 Grams

2026

Crazy Laced Agate Slabs--261 Grams

Auctions PlusMinneapolis, MN

Clear Quartz 1 lb: Clear Quartz 1 lb

2026

Clear Quartz 1 lb

Auctions PlusMinneapolis, MN

Lg Blue Aragonite Heart 193 Grams: Lg Blue Aragonite Heart 193 Grams

2026

Lg Blue Aragonite Heart 193 Grams

Auctions PlusMinneapolis, MN

2-Lg Carved Smokey Quartz Hearts .50 lbs: 2-Lg Carved Smokey Quartz Hearts .50 lbs

2026

2-Lg Carved Smokey Quartz Hearts .50 lbs

Auctions PlusMinneapolis, MN

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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

7 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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