Fossil - Ammonite Cross-Section in Matrix Stone

Description

Natural fossil specimen showing a partial ammonite shell cross-section embedded in a tan/orange sandstone matrix. Roughly palm-sized, shown next to a quarter for scale. The fossil's chambered shell structure is clearly visible in cream-white coloring against the surrounding rock.

Buyer's Premium

20%

Fossil - Ammonite Cross-Section in Matrix Stone

Lot 714284

Estimate $12-$36Sep 7, 2026, 12:15 AM EDT

Starting Price

Secure

$12

Good Bid

Strong Bid

Competitive Bid

Or select a higher max bid amount

Get approved to bid.

LiveAuctioneers Purchase Protection

Vetted auction houses

Secure, online bidding

Returns guaranteed for misrepresented listings

Dedicated support when you need it

ANCIENT EARTH FOSSILS ROCKS GEMS CRYSTALS e

Sep 7, 2026, 12:15 AM EDT

Thayer, MO, United States

Marble Trinket Box with Ammonite Fossil Lid: Round cream and tan marble/onyx lidded trinket box with a contrasting black stone lid inset with a polished ammonite fossil cross-section. Approximately 3 inches wide and 2.5 inches tall; 433 grams.

2 days LeftMarble Trinket Box with Ammonite Fossil Lid

$10

FOSSIL IN MATRIX ROCK STONE LAPIDARY SPECIMEN: FOSSIL IN MATRIX ROCK STONE LAPIDARY SPECIMEN

2 days LeftFOSSIL IN MATRIX ROCK STONE LAPIDARY SPECIMEN

$14

Crystal - Quartz Point with Green Chlorite Inclusions, 189 Grams: Natural quartz crystal point with a terminated tip, ranging from milky white to smoky gray-green with translucent windows and greenish chlorite-type inclusions plus chalky white coating over parts of

2 days LeftCrystal - Quartz Point with Green Chlorite Inclusions, 189 Grams

$10

Fossil - Round Tan Stone Disc with Radiating Fibrous Pattern, 3.5 in: Round natural stone disc with a striking radiating fibrous texture spreading outward from a dark central mass, framed by concentric growth-like banding. The body is tan to gray-brown with a black

2 days LeftFossil - Round Tan Stone Disc with Radiating Fibrous Pattern, 3.5 in

$10

Crystal - Polished Black Banded Agate & Yellow Quartz Point, 2.75 in, 53 Grams: Polished stone point with a dramatic contrast between glossy black and blue-gray banded agate along the lower half and a pale yellow to white crystalline quartz layer above. The piece is faceted to a

2 days LeftCrystal - Polished Black Banded Agate & Yellow Quartz Point, 2.75 in, 53 Grams

$10

Rock - Dark Green Nephrite Jade Slab, Polished Face, 6 in: Thick natural slab with one flat polished face showing deep forest green to near-black color with brighter apple green mottling and pale mineral veining. Edges are left rough and natural, and the

2 days LeftRock - Dark Green Nephrite Jade Slab, Polished Face, 6 in

$10

Crystal - Citrine Tumbled Chips, Pale Yellow & Clear Quartz Gravel, 20 Grams: Small lot of tumbled citrine chips in pale yellow, champagne, smoky gray, and clear tones with a few peachy pieces mixed in. Stones are polished with rounded natural faces, most in the 1/8 to 1/2

2 days LeftCrystal - Citrine Tumbled Chips, Pale Yellow & Clear Quartz Gravel, 20 Grams

$10

Mineral - Polished Carnelian Agate Freeform, Deep Red Orange, 3.5 in: Hand-polished freeform stone in deep red-orange carnelian agate with darker red, brown and amber banding and translucent areas that glow where light passes through. The shape is a rounded two-lobed

2 days LeftMineral - Polished Carnelian Agate Freeform, Deep Red Orange, 3.5 in

$10

Worldwide Gemstones '35 Kinds' Tumbled Stone & Map Collection, Sealed: Factory-sealed educational display box containing 35 different types of tumbled polished gemstones including amethyst, tiger's-eye, sodalite, rose quartz, and lapis, each labeled with name and paired

2 days LeftWorldwide Gemstones '35 Kinds' Tumbled Stone & Map Collection, Sealed

$10

Scrimshaw-Style Carved Oval Plaque with Pheasants and Farm Plow Scene: Oval scrimshaw-style plaque, likely resin or bone composite, finely engraved with a pastoral scene of three ring-necked pheasants amid an antique horse-drawn plow and tall grass. Measures

2 days LeftScrimshaw-Style Carved Oval Plaque with Pheasants and Farm Plow Scene

$8

Rock - Carborundum Silicon Carbide Iridescent Mineral Specimen: A natural chunk of iridescent carborundum (silicon carbide) crystal displaying flashes of green, purple, and blue metallic color across its jagged, crystalline surface. Photographed with a quarter

2 days LeftRock - Carborundum Silicon Carbide Iridescent Mineral Specimen

$8

Rock Specimen with Pyrite Clusters and Miniature Metal Figurine on Fluorite Base: A rough-cut blue-green fluorite (or similar banded crystal) base displays two natural pyrite crystal clusters and a small cast pewter/silver-tone decorative figurine resembling a stylized deer or

2 days LeftRock Specimen with Pyrite Clusters and Miniature Metal Figurine on Fluorite Base

$9

Diecast Model Car and Fossil: 1968 Shelby GT500 Replica with Fossilized Fish Jaw in Matrix: A 1:18 scale die-cast model of a 1968 Ford Shelby Mustang GT500 in metallic olive green with white racing stripes, opening hood revealing a detailed red engine bay, opening driver door, and chrome

2 days LeftDiecast Model Car and Fossil: 1968 Shelby GT500 Replica with Fossilized Fish Jaw in Matrix

$14

Maisto Lamborghini Diablo SV 1:18 Diecast Model Car: A white Maisto 1:18 scale diecast Lamborghini Diablo SV with red SV graphics, opening scissor doors, and detailed cockpit interior, mounted on a black display base with brass nameplate. Model

2 days LeftMaisto Lamborghini Diablo SV 1:18 Diecast Model Car

$8

Mineral: Chalcopyrite Peacock Ore Crystal Cluster Specimens (Set of 4): Four natural chalcopyrite (peacock ore) mineral specimens displaying vivid iridescent blue and purple crystalline surfaces against a black backdrop. Total weight noted as 43 grams on the accompanying

2 days LeftMineral: Chalcopyrite Peacock Ore Crystal Cluster Specimens (Set of 4)

$8

$Rock: Pink and White Banded Mineral Slab: A flat rough-cut slab of pink and white banded mineral, likely mangano/pink calcite or similar carbonate stone, measuring roughly 6 inches across its longest dimension. Natural fracture edges with a$

2 days LeftRock: Pink and White Banded Mineral Slab

$8

Mineral: Green Fluorite Specimen with Pyrite Cluster and Silver Miner Figurine: Rough natural green fluorite crystal specimen, roughly 3 inches across, topped with a cluster of metallic gold pyrite crystals and a small silver-tone pewter figurine of a prospector swinging a

2 days LeftMineral: Green Fluorite Specimen with Pyrite Cluster and Silver Miner Figurine

$9

Rock and Mineral Specimen Lot - Polished Agate/Jasper Slices, 6 Pieces: A group of six small polished stone specimens including orbicular and banded agate/jasper pieces in tan, cream, olive, and rust tones with druzy and botryoidal textures. A US quarter is included for

2 days LeftRock and Mineral Specimen Lot - Polished Agate/Jasper Slices, 6 Pieces

$8

PAPOOSE TRINKET: Polished slab specimen featuring sprays of green acicular (needle-like) crystals, possibly epidote or a similar fibrous mineral, embedded in a light-colored host rock matrix. A small silver bail/loop

2 days LeftPAPOOSE TRINKET

$8

Rock and Mineral - Amethyst Geode Half with Purple Crystal Cavity: A natural amethyst geode section with a gray-white agate rind and a hollow interior lined with deep purple amethyst crystal points, weighing 118 grams per the auction house label. A 1966 Washington

2 days LeftRock and Mineral - Amethyst Geode Half with Purple Crystal Cavity

$8

Related Items

Polished Ammonite Fossil Display Section: Polished Ammonite Fossil Display Section, 5.25in

Sep 26, 2026Polished Ammonite Fossil Display Section

$50

Str. & Ammonite Fossil Pendant Necklace: A sterling silver necklace featuring a freeform pendant containing a polished section of an ammonite fossil set within its natural stone matrix. The double-sided specimen is polished to reveal the int

4 days LeftStr. & Ammonite Fossil Pendant Necklace

$10

Collection of Fossil Specimens Including Ammonites, Fossil Fish, and Petrified Mammal Dung: Collection of assorted natural fossil specimens including an ammonite fossil, fossil fish preserved in limestone matrix, petrified mammal dung, and several smaller fossilized marine specimens. The gro

Sep 17, 2026Collection of Fossil Specimens Including Ammonites, Fossil Fish, and Petrified Mammal Dung

$10

Marble Trinket Box with Ammonite Fossil Lid: Round cream and tan marble/onyx lidded trinket box with a contrasting black stone lid inset with a polished ammonite fossil cross-section. Approximately 3 inches wide and 2.5 inches tall; 433 grams.

2 days LeftMarble Trinket Box with Ammonite Fossil Lid

$10

(2) Orthoceras and Ammonite Fossil Stone Dish Set: (2) Orthoceras and Ammonite Fossil Stone Dish Set, 11.75in by 1.5in

Sep 21, 2026(2) Orthoceras and Ammonite Fossil Stone Dish Set

$5

FOSSIL IN MATRIX ROCK STONE LAPIDARY SPECIMEN: FOSSIL IN MATRIX ROCK STONE LAPIDARY SPECIMEN

2 days LeftFOSSIL IN MATRIX ROCK STONE LAPIDARY SPECIMEN

$14

Natural Ammonite Fossil Specimen: Natural ammonite fossil preserved in a limestone matrix, displaying the characteristic tightly coiled shell with pronounced ribbing and visible spiral chambers. Ammonites are extinct marine cephalopod

Sep 17, 2026Natural Ammonite Fossil Specimen

$10

Rare Pyrite Ammonite Fossil, Formed Through Pyritization: Rare Pyrite Ammonite Fossil, Formed Through Pyritization

23 hrs LeftRare Pyrite Ammonite Fossil, Formed Through Pyritization

$11

Large Ammonite Fossil: Large Ammonite Fossil Approximately 34cm, 18.5kg, Originating from Morocco, Large Specimen with Display Stand This is a large ammonite fossil from Morocco. Approximately 34cm in width, weighing approx

Sep 18, 2026Large Ammonite Fossil

$100

Fossil Sand Dollar and Ediacaran Primitive Sea Anemone Colony Group: Ediacaran-Miocene Period, circa 600-25 million years B.P. Comprising: a fossil 'sand dollar' on matrix, a rectangular section of Nemiana simplex in a box with an information card, a polished stone 'wa

7 days LeftFossil Sand Dollar and Ediacaran Primitive Sea Anemone Colony Group

£10

5 1/2" Cut and Polished Ammonite Fossil, Colorful Example: 5 1/2" Cut and Polished Ammonite Fossil, Colorful Example

23 hrs Left5 1/2" Cut and Polished Ammonite Fossil, Colorful Example

$12

Huge 5 1/2" Cut Ammonite Fossil, Highly Polished with Amazing Color: Huge 5 1/2" Cut Ammonite Fossil, Highly Polished with Amazing Color

23 hrs LeftHuge 5 1/2" Cut Ammonite Fossil, Highly Polished with Amazing Color

$17

TOP