Chalcopyrite and Calcite Cluster – Iridescent Rainbow

SKU · WW48i0jS8OkSD168
$65.00
Free worldwide shipping over $38

A rounded chalcopyrite mass whose tarnish film runs gold, magenta, teal and bronze as it turns in the light, with a scatter of small water-clear calcite crystals set into the hollows on top. Hand-sized at 165 g.

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Authenticity guaranteed
Hand-examined + numbered
Worldwide shipping
Insured tracked delivery
Display-ready
Acrylic base included
14-day return
No-questions return window

Specimen details

MineralCalcite
Locality
Crystal systemHexagonal
Chemical formulaCaCO₃
Dimensions5.6 cm × 3.4 cm × 4.6 cm
Weight165 g
ColorMulticolor
SizeSmall Cabinet (2–4 inches / 5–10 cm)
SpeciesCalcite, Chalcopyrite
ConditionNo damage on display faces

Tags

calcitecollector's itemgeological treasuremineral specimendecorative mineralchalcopyritechalcopyrite specimennatural beautyUnder $100crystal clusterUnder $250

About this specimen

Turn this one under a lamp and the surface behaves like oil on water: the chalcopyrite is coated in a tarnish film that runs from brass-gold through magenta and teal to deep bronze, shifting with every degree of tilt. Across the top, a dozen small water-clear calcite crystals sit in the hollows between the metallic mounds, their sharp edges a flat contrast to all that colour.

The iridescence is a tarnish layer a fraction of a micron thick, formed as the copper-iron sulphide oxidises; the brass yellow beneath it is the true colour of chalcopyrite. Because that film is so thin, skin oils and rubbing will dull it, so handle the piece by its rough underside. The calcite, at Mohs 3, is the softer of the two and cleaves readily.

The specimen measures 5.6 × 3.4 × 4.6 cm and weighs 165 g, shown in the hand with no base. These photographs were taken of this specimen alone.

About Calcite

Calcite is a carbonate mineral prized by collectors for its exceptional color range, with several world-class Chinese localities.

Learn more about Calcite in our encyclopedia

Frequently asked questions

Will I receive the exact specimen shown?

Yes. Every specimen is a single, one-of-a-kind piece, and the photographs show the exact item you will receive — never a stock photo.

Is this Calcite natural?

Yes — specimens like this form naturally. As is standard in the trade, some pieces are gently cleaned or trimmed; we photograph the actual specimen and describe its origin and condition conservatively.

How is it packed and shipped?

Orders ship worldwide with fully insured, tracked delivery, carefully packed to protect fragile crystals. A display base is included.

Can I return it?

Yes — there is a 14-day return window.

What collectors say

★★★★★4.97· Verified reviews
Chalcopyrite and Calcite Cluster – Iridescent Rainbow
Chalcopyrite and Calcite Cluster – Iridescent Rainbow
$65.00