Polished half of an ammonite fossil with visible spiral chambers on a neutral background

Vendor:Rare Earth Gallery

Polished Ammonite Fossil Half

$74.99

A polished half of an ammonite fossil sourced from Madagascar, ranging from 5 to 6 inches in diameter and weighing between 260 and 390 grams. Its intricate natural spiral form captures a moment of ancient history suitable for display in spaces devoted to natural collectibles.

Available in multiple sizes from 5" to 6" with varying weights
Polished surface reveals detailed fossil structure
Originates from Madagascar
Each piece is a unique natural specimen
Category: Fossil collectibles

Size: 5" 264g

5" 264g
5" 286g
5.5" 298g
5.75" 364g
6" 386g
6" 352g

Product variants

Authentic Madagascar Fossil Half

Polished Ammonite Fossil Half

Exact Details and Fit

Size and Weight Options

Type: Fossil
Form: Polished Half
Diameter: 5"-6"
Weight: 260g-390g
Origin: Madagascar
Category: Lapidary - Fossils
Vendor: Rare Earth Gallery

What arrives

One polished ammonite fossil half

Fossil Category Fit

Lapidary - Fossils

Intended for display as a natural collectible or decor object.

Shipping and Returns

Order and Delivery Info

Shipping

Shipping rates vary by location and are provided at checkout. Label generated within two days of order.

Returns

30 day returns available with no label or restocking fees.

A still moment

The calm of a tide long gone

Spiral with a past

Rooms crave something real—an object that slows the eye and softens conversation. The Polished Ammonite Fossil Half does this with quiet certainty, its chambers holding warm browns and ochres that play gently with light. At 5–6 inches across and 260–390 grams, it sits with presence without crowding a shelf. From Madagascar, it brings the hush of the earth to everyday spaces.

Grounded, conversational, close

Small rituals make a home—placing keys beside a spiral older than cities, glancing at it between emails, letting guests trace the curve. This fossil half turns a corner into a pause, a table into a gathering point. Its polished face invites the hand; its story needs no telling to be felt.

For the collector at home

Someone who favors natural history on the bookshelf, keeps a measured palette, and wants one meaningful piece to anchor a vignette.

Place and live with it

Set the Polished Ammonite Fossil Half on a shelf or side table where light can catch the chambers and invite a closer look.

Maker Spotlight

Rare Earth Gallery

Rare Earth Gallery brings natural history into interiors through a curated selection of minerals and collectibles. Based in Bellingham, WA, the supplier focuses on crystals, gemstones, jewelry, seashells and other natural creations chosen for color, formation, texture and visual presence. Each specimen is presented with dimensions, origin details, and notes about natural variation so buyers can weigh scale and character before committing. That attention to selection and detail makes Rare Earth Gallery a source of single, display-ready pieces—whether you seek a dramatic centerpiece for a shelf, a study specimen for a collection, or a small talisman to wear. If you care about one-of-a-kind geological character and visible presence, these finds merit a place in view.

Explore Rare Earth Gallery

Customer Questions

Polished Ammonite Fossil Half FAQ

What are the dimensions?

Each fossil half measures approximately 5–6 inches in diameter.

How much does it weigh?

Each piece is approximately 260–390 grams.

Where is it from?

The fossil half is from Madagascar.

Is the surface polished?

Yes, the cut face is polished to reveal the internal chambers and patterning.

Does it come as a whole pair?

This listing is for a single polished ammonite fossil half.