Tim Lewis Fossils

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Fossilized Floating Crinoid Scyphocrinites w/ Pyrite: North Africa, Morocco, Erfoud region, Silurian to early Devonian era, ca. 443 to 400 million years ago. A well-preserved crinoid fossil of Scyphocrinites elegans displayed in relief within a dark ston

2026

Fossilized Floating Crinoid Scyphocrinites w/ Pyrite

Artemis Fine ArtsLouisville, CO

Authentic Triassic Period Redondasaurus: This tooth was recovered in Triassic Formations in New Mexico. This is a large and high Tooth from Redondasaurus, who was one of the very first Dinosaurs known. They were like a large Crocodile with m

2026

Authentic Triassic Period Redondasaurus

LEAP AuctionsSpringtown, TX

Large Amethyst Angel Wings on Fitted Stand: Large Amethyst Angel Wings on Fitted Stand, a natural geode cut in half exposing the amethyst crystals inside. On custom fitted metal stand. Dimensions: Total height including stand 37 x 26 x 13 in. D

2026

Large Amethyst Angel Wings on Fitted Stand

Neue AuctionsBeachwood, OH

FLAWLESS BLUISH GREEN TOURMALINE GEMSTONE - 13X5X4 mm: FLAWLESS BLUISH GREEN TOURMALINE GEMSTONE - 13X5X4 mm

2026

FLAWLESS BLUISH GREEN TOURMALINE GEMSTONE - 13X5X4 mm

Fantasy JewelryMuscat, AE

A Whakaturi Paua Shell Lidded Box and an Assortment of Polished Gemstones and Crystal: This lot consists of a contemporary lidded decorative box and a collection of various mineral specimens. The rectangular box features a mosaic exterior composed of iridescent blue and green paua shell

2026

A Whakaturi Paua Shell Lidded Box and an Assortment of Polished Gemstones and Crystal

Kellie's Estate SalesOkemos, MI

9.8ct Maine USA Sparhawk Teal Tourmaline Trillion Cut No Reserve GGL Certified: Significant specimen of American gemstone history. Sparhawk tourmalines are prized for their unique mint-green-teal color and were discovered at the Sparhawk mine in Poland, Maine, approximately 25–

2026

9.8ct Maine USA Sparhawk Teal Tourmaline Trillion Cut No Reserve GGL Certified

California GemstonesSan Diego, CA

3.6ct Mogok Pink Ruby Round Cut PAIR 7.2 tcw: two natural pink rubies, each weighing approximately 3.6 carats, for a total combined weight of 7.2 carats. Sourced from the legendary Mogok Valley in Myanmar, these stones are highly prized for their

2026

3.6ct Mogok Pink Ruby Round Cut PAIR 7.2 tcw

California GemstonesSan Diego, CA

12.10 Carat Deep Purple Raspberry Amethyst Round Cut from Brazil EGL Certified: a high-clarity, round-cut gemstone characterized by a deep, vivid violet hue and excellent, transparency. This untreated, large-carat stone (Mohs hardness 7) is ideal for statement jewelry, offering a

2026

12.10 Carat Deep Purple Raspberry Amethyst Round Cut from Brazil EGL Certified

California GemstonesSan Diego, CA

1.80ct Mogok Ruby Oval Cut No Reserve GIE Certified: This 1.80ct natural oval-cut ruby from the renowned Mogok region of Myanmar features a vibrant pinkish-red color, exceptional clarity, and an excellent cut. Mogok rubies are highly prized for their na

2026

1.80ct Mogok Ruby Oval Cut No Reserve GIE Certified

California GemstonesSan Diego, CA

4.2ct Blue Spinel Round Cut from Sri Lanka AGSL Certified No reserve: features a brilliant blue hue, high clarity, and excellent durability, found in alluvial deposits. Certified by AGSL, this substantial size suggests a premium investment piece, sourcing for the rare b

2026

4.2ct Blue Spinel Round Cut from Sri Lanka AGSL Certified No reserve

California GemstonesSan Diego, CA

9.2ct Colombian Emerald Trillion Cut No Reserve GGL Certified: characterized by its triangular shape, intense green color, and superior brilliance. Colombian emeralds are prized for their pure green hues, often with slight blue undertones, and typically display e

2026

9.2ct Colombian Emerald Trillion Cut No Reserve GGL Certified

California GemstonesSan Diego, CA

10.15ct Brazilian Amethyst Emerald Cut No Reserve GGL Certified: a substantial, high-clarity gemstone known for its deep purple color and geometric faceting. Brazilian material is celebrated for its excellent, rich, and consistent color.

2026

10.15ct Brazilian Amethyst Emerald Cut No Reserve GGL Certified

California GemstonesSan Diego, CA

6ct tcw Ruby Round Cut No Reserve Lab Grown: A pair of lab-grown ruby round-cut stones features a vibrant, fiery pidgeon blood red color with excellent clarity. 3ct per stone. These lab-created synthetic corundum gems possess identical chemical,

2026

6ct tcw Ruby Round Cut No Reserve Lab Grown

California GemstonesSan Diego, CA

6 Carats Brazilian Blue Paraiba Tourmaline Pear Cut No Reserve EGL Certified: High-quality example showing extreme clarity. Unheated or treated showing a light original blue. The pear shape is popular to showcase the color and maximize the spread of the crystal. A well-cut ston

2026

6 Carats Brazilian Blue Paraiba Tourmaline Pear Cut No Reserve EGL Certified

California GemstonesSan Diego, CA

2.55 Carat Royal Blue Tanzanite Trillion Cut: Highly desirable gemstone, often characterized by its deep, vibrant color and exceptional brilliance.

2026

2.55 Carat Royal Blue Tanzanite Trillion Cut

California GemstonesSan Diego, CA

5.1ct Brazilian DEEP Blue Sapphire Oval Cut No Reserve: Characterized by a rich, dark blue coloration indicative of its origin. Brazilian sapphires are generally darker than their Ceylon counterparts, with strong color saturation. They may exhibit minor na

2026

5.1ct Brazilian DEEP Blue Sapphire Oval Cut No Reserve

California GemstonesSan Diego, CA

3ct Brazilian Blue Green Tourmaline Oval Cut No Reserve GIE Certified: Prized for its intense neon-like glow caused by copper trace elements. It typically displays electric blue-green, cyan, or vivid green colors in an oval cut, designed to maximize brilliance. These gem

2026

3ct Brazilian Blue Green Tourmaline Oval Cut No Reserve GIE Certified

California GemstonesSan Diego, CA

10ct Mozambique Deep Red Ruby Round Cut GGI Certified: highly saturated, large-format gemstone known for its vibrant, intense "blood red" color, superior clarity, and high durability. Sourced from the Montepuez region, these large rubies are typically cut

2026

10ct Mozambique Deep Red Ruby Round Cut GGI Certified

California GemstonesSan Diego, CA

8.22 Carat Beautiful Mozambique Ruby Cushion Cut No Reserve GIE Certified: Untreated red ruby, featuring a vibrant, deep red color often described as blood red. The stone is expertly cut into a cushion cut to maximize its intense sparkle and internal fire.I just can't captur

2026

8.22 Carat Beautiful Mozambique Ruby Cushion Cut No Reserve GIE Certified

California GemstonesSan Diego, CA

Striking PAIR of Amethysts 3.8ct & 3.9ct Cushion Cut from Brazil No reserve: A high-quality selection of natural purple amethyst originating from Brazil. Brazilian amethyst is globally recognized for its excellent transparency, deep purple hues, and high clarity. This pair are

2026

Striking PAIR of Amethysts 3.8ct & 3.9ct Cushion Cut from Brazil No reserve

California GemstonesSan Diego, CA

18.50ct Sky Blue Tourmaline Oval Cut No Reserve VGL Certified: An 18.50-carat Sky Blue Tourmaline is a significant gemstone. Featuring a bright, transparent color reminiscent of tropical waters, an oval cut maximizes brilliance in high-carat stones. This size and

2026

18.50ct Sky Blue Tourmaline Oval Cut No Reserve VGL Certified

California GemstonesSan Diego, CA

3ct Brazilian Neon Blue Tourmaline Emerald Cut No Reserve GIE Certified: Investment-grade gemstone. It features a, vivid, internally lit neon-blue hue caused by copper, fashioned into a precise, rectangular step-cut that highlights its superior clarity and brilliance. Thes

2026

3ct Brazilian Neon Blue Tourmaline Emerald Cut No Reserve GIE Certified

California GemstonesSan Diego, CA

11.55ct Afghanistan Green Tourmaline Pear Cut Super Clarity No Reserve: This 11.55-carat Afghan green tourmaline is a high-quality pear-cut gem, featuring intense, vibrant green hues characteristic of the region. It is described as having "superior" clarity, offering exce

2026

11.55ct Afghanistan Green Tourmaline Pear Cut Super Clarity No Reserve

California GemstonesSan Diego, CA

3ct Sri Lankan Green Sapphire Round Cut GIE Certified: highly durable, and brilliant gemstone. These stones typically feature deep to medium green hues, sometimes with blue undertones. Exhibiting good clarity with high-quality, brilliant faceting that max

2026

3ct Sri Lankan Green Sapphire Round Cut GIE Certified

California GemstonesSan Diego, CA

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Fossils Auctions

Jurassic Period Giant Fossil Ammonite | Southern France | 31" Intact Spiral

Monumental 17th C. Chinese Wood Sculpture of Guanyin

18th C. Cusco School Oratorio Portátil, Viceregal Peru, ex-Holler & Saunders

Fine Fossils, Native American, Asian, Ethno

Artemis Fine Arts

Starts on:

Louisville, CO, US

3 days Left

Michoacan Pottery Figure - Seated Dignitary in Headdress

Prehistoric Complete Oreodont Femur Bone Fossil

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

Summer Marketplace | Ancient & Ethnographic

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

6 days Left

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