Pyrite cluster with rock crystal – Monumental “fool’s gold”, 3.6kg

A monumental collector's item of exceptional crystal quality – a massive pyrite cluster with hundreds of perfectly formed cubic crystals, interspersed with clear rock crystal points. Weighing 3.6 kilograms and measuring 25 cm in length, this specimen displays the full splendor of "fool's gold": intense metallic luster in gold and bronze tones, geometrically perfect cube shapes, and a three-dimensional architecture reminiscent of a futuristic skyline. The scattered rock crystals create a captivating contrast between the metallic pyrite cubes and transparent quartz points. A museum-worthy statement piece for discerning collectors.

MINERALOGICAL FEATURES

Perfect cubic crystallization
Hundreds of individual pyrite crystals of varying sizes – from millimeter-sized cubes to impressive 2cm cubes – are scattered across the entire ledge. The geometric perfection of the right-angled shapes, the characteristic striations on the cube faces, and the intense metallic luster make each individual crystal a masterpiece of nature. Pyrite crystallizes in the cubic system and here exhibits ideal cube, octahedral, and pyritohedral forms.
Three-dimensional architecture
The formation is not flat, but three-dimensional – pyrite crystals grow in all directions, creating a complex, sculptural form. The lower layers display densely packed, smaller crystals, while the upper areas showcase spectacular, freestanding large crystals. This architectural arrangement is reminiscent of a golden city or a futuristic crystal skyline.
Rock crystal accompaniment
Between the golden pyrite cubes grow clear to slightly smoky rock crystal points, creating a dramatic contrast. The transparent quartz crystals refract the light and enhance the brilliance of the metallic pyrite surfaces.

LOCATION: PERU
The most spectacular pyrite clusters with cubic crystallization come from Peru. The combination of perfect geometry, monumental size, and rock crystal accompaniment makes Peruvian pyrite highly sought after by collectors worldwide.

TECHNICAL DATA:

• Dimensions: approx. 25 × 12 × 15 cm (L × W × H)
• Weight: 3.6 kg
• Main mineral: Pyrite (iron sulfide)
• Associated mineral: Rock crystal (quartz)
• Mohs hardness: Pyrite 6-6.5 | Rock crystal 7 (robust)
• Color: Metallic golden yellow (pyrite), transparent (rock crystal)
• Location: Peru
• Special feature: Over 100 perfect cubic pyrite crystals, three-dimensional formation

Care instructions: Pyrite can oxidize (“pyrite decay”) in high humidity. Store in a dry place, dust occasionally with a dry cloth, do not clean with water.

COLLECTIBLE VALUE & AUTHENTICITY:

We source our exhibits from carefully selected sources: mineral shows, private collections, and direct contacts at mineral sites worldwide. Every piece is checked for authenticity.
Ideal for discerning mineral collectors who value perfect crystal geometry, monumental size, and museum-quality specimens. The combination of golden pyrite and clear rock crystal makes this piece a visual highlight in any collection.

SHIPMENT:

Insured shipping in sturdy packaging. Collection in the Bergisches Land region is possible by arrangement.

If you have any questions about the origin, authenticity or other details, please feel free to contact us before purchasing.