How can I tell an iron meteorite slice is real?

A genuine etched iron meteorite shows the Widmanstätten pattern — an interlocking lattice of nickel-iron crystals that only forms over millions of years of slow cooling in space and cannot be reproduced on Earth. Look for a named meteorite and, ideally, a certificate of authenticity. Be cautious of unnamed 'meteorite' with no visible pattern.

How much do iron meteorite slices cost?

It varies with the meteorite, size, thickness, and how crisp the pattern is. Small slices are affordable, while large, thin, well-etched pieces from famous falls cost more. You're paying for a genuinely rare, extraterrestrial material — but there are slices at most budgets.

Do iron meteorite slices rust?

Yes — iron meteorite oxidizes if exposed to moisture. Keep the slice dry, handle it with clean or gloved hands, store it with silica gel, and wipe on a thin film of mineral oil or wax periodically. Caught early, surface rust is reversible.

What's the difference between an iron slice and a pallasite slice?

An iron slice is solid nickel-iron and shows the Widmanstätten pattern when etched. A pallasite slice is a stony-iron meteorite containing green-gold olivine crystals suspended in the metal, so it shows colour and translucency as well as metal. See our pallasite slice guide for more.

Buyer's & Collector's Guide

Iron Meteorite Slices: The Complete Buyer's & Collector's Guide

FSThe Falling Stars Collection DeskMeteorite specialists & buyer's guide|Updated August 25, 2026|9 min read

An etched iron meteorite slice showing the Widmanstätten pattern — An iron meteorite slice — a cross-section of an asteroid core, etched to show its crystal lattice.

An iron meteorite slice is one of the most striking objects a collector can own — a thin cross-section of a metallic asteroid core, acid-etched to reveal the natural Widmanstätten pattern. This guide covers what iron slices are, how they’re cut, how to tell a genuine one, what affects value, and how to display and care for a slice.

What is an iron meteorite slice?

Iron meteorites are fragments of the metallic cores of shattered asteroids — solid nickel-iron that formed 4.5 billion years ago. A slice is a thin cross-section cut from one of these masses and polished, then etched with a mild acid to bring out the crystal structure. The result is a genuine piece of deep space you can hold. For the full family tree, see types of meteorites.

Round iron meteorite slice with a fine Widmanstätten pattern — A round iron slice — the etched lattice is the fingerprint of a genuine iron meteorite.

The Widmanstätten pattern

When an iron meteorite is cut and etched, it reveals an interlocking lattice of nickel-iron crystals — the Widmanstätten pattern — that forms over millions of years of extraordinarily slow cooling in space and cannot be reproduced on Earth. It’s both the beauty and the proof of an iron slice. The fineness of the pattern depends on the meteorite; Muonionalusta shows a crisp, tight pattern, while Gibeon is slightly coarser and very rust-resistant.

Round, square & freeform cuts

Cut	Look	Shop
Round	Classic, even, often worn as a pendant	Round slice
Square	Modern, architectural display piece	Square slice
Cube / freeform	Etched on multiple faces, bold statement	Meteorite cube

How to tell a genuine slice

Named meteorite — it should say exactly which meteorite, not just “meteorite”.
Visible Widmanstätten pattern — the lattice is the proof; it can’t be faked.
It sticks to a magnet — iron meteorite is strongly magnetic.
Certificate of authenticity — documents the fall and classification.

Run the full checks in how to tell if a meteorite is real and learn to read the paperwork in the certificate guide.

What affects the value

Meteorite & provenance — famous, documented falls command more.
Size & thinness — large, thin, even slices are harder to cut.
Pattern quality — a crisp, complete Widmanstätten lattice.
Condition — no rust, clean etch, good polish.

Displaying & caring for it

Keep it dry — humidity is the enemy; store with silica gel.
Handle clean — skin oils and moisture start rust; use gloves for iron.
Oil it periodically — a thin film of mineral oil or wax protects the surface.

Full routine in how to display and care for a meteorite slice. Prefer colour? Compare with a pallasite slice. Ready to look? Browse meteorite specimens in the collection.

Frequently asked questions

It's a thin cross-section cut from an iron (nickel-iron) meteorite and acid-etched to reveal the natural Widmanstätten crystal pattern. Each slice is a genuine piece of a metallic asteroid core, billions of years old, and is prized as a display specimen or set into jewelry.
A genuine etched iron meteorite shows the Widmanstätten pattern — an interlocking lattice of nickel-iron crystals that only forms over millions of years of slow cooling in space and cannot be reproduced on Earth. Look for a named meteorite and, ideally, a certificate of authenticity. Be cautious of unnamed 'meteorite' with no visible pattern.
It varies with the meteorite, size, thickness, and how crisp the pattern is. Small slices are affordable, while large, thin, well-etched pieces from famous falls cost more. You're paying for a genuinely rare, extraterrestrial material — but there are slices at most budgets.
Yes — iron meteorite oxidizes if exposed to moisture. Keep the slice dry, handle it with clean or gloved hands, store it with silica gel, and wipe on a thin film of mineral oil or wax periodically. Caught early, surface rust is reversible.
An iron slice is solid nickel-iron and shows the Widmanstätten pattern when etched. A pallasite slice is a stony-iron meteorite containing green-gold olivine crystals suspended in the metal, so it shows colour and translucency as well as metal. See our pallasite slice guide for more.