Massive Pyrite Cluster | Spain

These pyrite cubes may appear to be man-made at first, but they are in fact completely natural! Originating from the "Ampliación a Victoria" mine near Navajún, Spain, these cubes are renowned for their stunning shine, near-perfect cubic formation, and sculptural appearance. A must-have for any mineral collector!

Cubes approx. size range: 0.25"-2"
Matrix approx. size: 23" x 12" x 8"
Cluster weighs at least 40 lbs.
Stand not included.

*Due to the size and weight of this specimen, it will be shipped in an internationally compliant wooden crate.

Shipping costs will be calculated and billed after purchase. Please contact us if you need a specific shipping rate prior to purchase. You may opt in for in-store pickup to cut your shipping costs all together and pick up your specimen in person. You can pick up from our store location in Kemmerer, Wyoming, or we deliver to both the Denver Gem & Mineral show in the Fall and the Tucson Gem & Mineral show in the winter. For any questions, please don't hesitate to contact us directly.

Iron pyrite - commonly called “fool’s gold” - is a shiny, metallic mineral made of iron and sulfur (FeS₂). It earned its nickname because its bright, brassy-yellow color can easily trick people into thinking it’s real gold.

What it looks like

Pyrite is famous for its mirror-like metallic luster and pale gold color. Unlike real gold, which looks softer and richer in tone, pyrite often appears slightly more silvery or brassy. One of its coolest traits is how it forms: perfect geometric shapes, especially cubes with fine parallel lines (striations) on their faces. You’ll also see it in clusters, nodules, or radiating “sun” formations.

Key physical properties

• Hardness: 6–6.5 on the Mohs scale (much harder than gold)

• Streak: Greenish-black to brownish-black

• Luster: Metallic and reflective

• Crystal system: Isometric (that’s why you get those cubes)

• Brittleness: Breaks or shatters rather than bends