cinnabar
cinnabar crystals from Hunan in China
Detailed sheet
cinnabar
Its name comes from the Persian “zinjifrah” or Latin “cinnabaris” … It is known since antiquity, it was described by Theophrastus in 315 BC. It was used as a red pigment.
This is the main ore of mercury, all the mercury compounds are highly toxic. Mercury has long been used to achieve the gilding metal but the toxicity of its vapors has reduced its use which is now regulated.
Mercury, a liquid metal, “dissolves” gold to form an amalgam.
CHEMICAL CHARACTERISTICS
HgS
mercury sulfide
PHYSICAL CHARACTERISTICS
Main color
red
Other colors
brown, grey, green
tarnishes in the light
Color of streak
red
Luster
adamantine, resinous
Hardness
2.0 to 2.5
Density
8.00 to 8.20
Cleavage
perfect
Fracture
uneven
OPTICAL PROPERTIES
Transparency
translucent, transparent
also opaque
Refractive index
2.905 - 3.256
Double refraction
0.351
strong, positive uniaxial
visible double refraction
No
Dispersion
0,400
Pleochroism
absent
Number of colors
1
Fluorescence
none
CRYSTALS PROPERTIES
massive and very bright
crystals system
trigonal
OTHER INFORMATIONS
Astrological sign
Aquarius, Cancer, Scorpio
APPROACHING GEMS
Exploited
sites
It is found in China (Guizhou) where the finest specimens come from , Chile, Namibia, Espagnen (Mibladen), Mexico (Guerrero, Durango, Sonora), Russia, United States (Arizona, Texas , Alaska).
use in jewelry
only a collection stone
Daily care
and precautions
Very fragile and sensitive to heat and light. Mercury salts are highly toxic, to handle with care.
Historical
healing properties
This stone symbolizes strength and courage. It would help to deal with negative thoughts. To handle with care because of the toxicity of mercury salts.
Other
Gems
Venez visitez
notre site web
voillot-joaillier.fr
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