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Chrysocolla

Chrysocolla

By Tim Matthews, JD, FGA, GG, DGA,
CEO and President of JTV (retired)
Published: June 2014
Modified: March 2022
Chrysocolla Polished Chrysocolla Rough Chrysocolla Jewelry
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Table of Contents
  • General Information
  • Chrysocolla Colors
  • Alternate Names
  • Countries of Origin
  • Care

Chrysocolla, derived from the Greek chrysos meaning "gold," is a copper mineral. Crystals are very rarely seen, but it is frequently intergrown with other minerals such as quartz or opal. This results in a harder, more resilient gemstone, as pure chrysocolla is soft and fragile. Its copper content is responsible for chrysocolla's range of bright green to blue hues.

General Information

  • Classification
  • Optical Properties
  • Characteristic Physical Properties
  • Chemistry & Crystallography
Common Name
Chrysocolla
Species
Chrysocolla
Transparency
Translucent - Opaque
Dispersion
Strength: None
Refractive Index
1.460-1.570
Birefringence
0.023- 0.040
Optic Character
Biaxial
Optic Sign
Negative
Polariscope Reaction
Aggregate (AGG), Doubly Refractive (DR)
Fluorescence
SWUV: Inert
LWUV: Inert
Pleochroism
Unobservable
Hardness
2-4
Streak
Green-White
Specific Gravity
2.000-2.400
Toughness
Poor
Inclusions
Chrysocolla often shows botryoidal growth structure and it often intergrown with chalcedony, malachite and turquoise.
Luster
Vitreous, Waxy
Stability
Poor
Fracture
Conchoidal
Cleavage
None
Chemical Name
hydrated copper silicate
Chemical Formula
(Cu,Al)2H2Si2O5(OH)4.nH2O
Crystal System
Monoclinic
Chemistry Classification
Silicate

Chrysocolla Colors

  • Blue Chrysocolla
    Blue
  • Green Chrysocolla
    Green

Alternate Names

Chrysocolla Quartz, Cuprian Chalcedony, Gem Silica

Countries of Origin

Papua New Guinea; Angola; Cyprus; Sudan; Malaysia; Kazakhstan; Portugal; Armenia; Greece; Austria; Mongolia; Morocco; Unknown; Mali; Luxembourg; Brazil; Iraq; Slovenia; Chile; Colombia; Ecuador; Argentina; Iran (Islamic Republic of); Hungary; Japan; Ukraine; Zambia; Congo; Bolivia (Plurinational State of); India; Lao People's Democratic Republic; New Zealand; Canada; Turkey; Belgium; Namibia; Finland; Italy; South Africa; Jamaica; Peru; Germany; Afghanistan; Russian Federation; Fiji; Czechia; United States of America; Egypt; Madagascar; United Kingdom of Great Britain and Northern Ireland; Costa Rica; Saudi Arabia; Sweden; Pakistan; China; Ireland; Poland; Slovakia; Bulgaria; France; Jordan; Serbia; Kyrgyzstan; Romania; Sri Lanka; Philippines; Uzbekistan; Switzerland; Spain; Azerbaijan; Mauritania; Norway; Congo (the Democratic Republic of the); Mexico; Uganda; Zimbabwe; Israel; Australia; Greenland; Tajikistan; Indonesia

Care

Normal Care unless it has been dyed then avoid harsh chemicals, acetone and ultrasonic cleaners.

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