15 sample specimens • one amazing planet

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Every rock has a story. What will you discover?

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5 specimens to discover

Demo collection

Quartz reference specimenMineral

One of Earth's most common minerals and a master of crystal shapes.

Hardness 7Brazil
Amethyst reference specimenMineral

Quartz coloured violet by iron and natural irradiation.

Hardness 7Brazil
Malachite reference specimenMineral

A vivid green copper mineral famous for rings and flowing bands.

Hardness 3.5–4DR Congo
Pyrite reference specimenMineral

A brassy metallic mineral that often forms near-perfect cubes.

Hardness 6–6.5Canada
Fluorite reference specimenMineral

A colourful mineral whose crystals can glow under ultraviolet light.

Hardness 4Morocco