Colorado Pyrite on Quartz & Calcite • Natural Metallic Crystal Cluster • 186 g

This natural pyrite cluster originated from Colorado and features bright, metallic crystals perched on a base of quartz and calcite. The piece shows crisp reflective faces with the classic brassy gold color pyrite is known for. At 186 grams, it has a solid, weighty feel and displays beautifully from multiple angles. The contrast between the sparkling pyrite and the lighter quartz‑calcite matrix makes the crystal structure stand out clearly, giving it strong visual presence for shelves, desks, or collector displays.

Pyrite forms when iron‑ and sulfur‑rich hydrothermal fluids move through fractures in rock deep underground. As these fluids cool, iron (Fe) bonds with sulfur (S) to create iron sulfide (FeS₂), which naturally crystallizes into cubes and other geometric shapes. Colorado’s mineral‑rich geology—shaped by ancient volcanic activity, uplift, and circulating hot fluids—creates ideal conditions for sulfide minerals to form in veins and pockets. Over long periods of heat, pressure, and mineral‑rich water flow, clusters like this one develop within the host rock, often alongside minerals like quartz and calcite.

FUN FACT
Pyrite is one of the few minerals that can actually spark when struck against steel. Early settlers and miners in the American West—including Colorado—used pyrite nodules as a fire‑starting tool because the iron sulfide releases tiny hot sparks when hit with enough force.

DIMENSIONS:
2.75” L × 3.5” W × 2.2” H
Weight: 186 g (6.56 oz)
Packaged Weight: 0 lb 8 oz

——————————-
CARE INSTRUCTIONS:

Keep dry — Pyrite is stable when dry, but prolonged moisture can cause surface dulling over time. Display indoors and avoid storing in damp areas.

Avoid harsh cleaners — Do not use chemical cleaners or acids. If needed, gently dust with a soft brush or microfiber cloth.

Handle with care — Pyrite crystals can have sharp edges, and the quartz/calcite matrix can be brittle. Hold from the base rather than the crystal tips.

Keep out of direct sun — Long‑term direct sunlight can warm the specimen and potentially stress the matrix. Indirect light is ideal.

Store safely — If storing, wrap in soft padding and keep in a dry, stable environment.