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Gemstone Crystal System Density Hardness Refractive index Treatments
Jasper
micrcrystalline 2.65 7.0 1.564-1.660 none

Carved jasper jar

Color:
red and Orange with brown modification

Durability:
Very durable

Localities:
World wide


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Jasper
SiO2
(silicon dioxide)

Jasper is a mircrocrystalline variety of quartz known as chalcedony. It occurs in a number of different colors, such as red, brownish-red, brown and dark green. It is geologically common, forming at low temperatures when silica-rich ground water flows through sediments and rocks. Jasper had the reputation of a healing and protecting stone since antiquity. Wearing jasper made one safe from drowning, lung disease and scorpion bites. When engraved with a scorpion, it would stop bleeding. When engraved with a dog or stag, it it would cure demonic possession. Native Americans believed it could bring rain. Today, it is metaphysically considered a grounding stone, inspiring a deeper appreciation of nature.

Quartz Family:

Amethyst
Citrine
Ametrine
Rutilated Quartz
Smokey Quartz
Rose Quartz
Dendritic Quartz
Tourmalinated Quartz
Phantom Quartz


Microcrystalline
Quartz:

Agate
Chrysoprase
Jasper
Carnelian
Bloodstone
Onyx

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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