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Gemstone Crystal System Density Hardness Refractive index Treatments
Chrysocolla
microcrystalline 2.00-2.24 2-4 1.54 none

Various examples of chrysocolla

Color:
Varieties of Blue and Green

Clarity: Translucent to Opaque
Optic Character: DR Uniaxial Positive
Cause of Color: Cu
Fluorescence: Inert
Fracture : Irregular/Uneven, Sub-Conchoidal
Luster : Vitreous, Waxy, Earthy
Cleavage : None
Durability: Poor

Characteristics for Identification:
Hardness, fracture,

Localities:
Associated with copper deposits world wide

 

Chrysocolla
(Cu,Al)2H2Si2O5(OH)4·n(H2O)

Chrysocolla is a hydrous copper silicate. It's a soft mineral and doesn't hold up well in jewelry. It is associated with the minerals azurite and malachite. Recently a silicified variety has been found that has the color of chrysocolla but is considerably harder and translucent as opposed to opaque. Chrysocolla has a calming and peaceful reputation, and has been credited with helping nervous speakers communicate more clearly.

Variteies of Chrysocolla:

Chrysocolla
Gem Silica Chrysocolla
Chrysocolla is often confused with:

Turquoise
Glass
Plastic


The following books are my recommendations for further study.
They are some of the best available.
If you would like a larger selection, please visit the Book Shop.

Gemstones: Symbols of Beauty and Power
by Eduard J. Gubelin, Franz-Zaver Erni


The Curious Lore of Precious Stones:
by George Frederick Kunz


Gemstone Buying Guide: A Guide to Buying
by Renee Newman


Gems: Their Sources, Descriptions and Identification...
by Robert Webster, Peter G. Read (Editor)
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