Jasper

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Agate-Jasper-Amethyste
Černý Potok, Vejprty, Krušné Hory Mts, Ústí Region, Bohemia, Czech Republic

Item-No.: LM12
Price: 20.00 EUR 
Agate-Jasper-Amethyste
Votrubec quarry, Kozákov, Liberec Region, Bohemia, Czech Republic

Item-No.: LM18
Price: 32.00 EUR 
Jasper green - Kozakov
Kozákov, Liberec Region, Bohemia, Czech Republic

Item-No.: 1868
Price: 44.00 EUR 
Jasper green - Kozakov
Kozákov, Liberec Region, Bohemia, Czech Republic

Item-No.: 1870
Price: 44.00 EUR 
Jasper green - Kozakov
Kozákov, Liberec Region, Bohemia, Czech Republic

Item-No.: 1871
Price: 40.00 EUR 
Jasper green - Kozakov
Kozákov, Liberec Region, Bohemia, Czech Republic

Item-No.: 1873
Price: 28.00 EUR 

Synonyms:  Imperial Jasper, Jasperite, Vabanite
Variety of:  Chalcedony
Note:  A poorly defined lapidary name for a red to variably coloured microcrystalline chalcedony
IMA Status:  not recognised
Classification:  Oxides
Chemical formula:  SiO2
Crystal system:  Trigonal - microcrystalline, cryptocrystalline
Density (g/cm3):  2,6 - 2,9 measured
Tenacity:  Brittle
Cleavage:  Non observed
Fracture:  Conchoidal, sub-conchoidal
Hardness (Mohs):  6,5 - 7
Colour:  Rot, rot-brown, brown, grün, gelb, yellow, white but black took, any color due to embedded minerals
Lustre:  Vitreous, waxy, dull
Streak:  White
Application:  Famous as a gemstone, fancy stone

 


 

 


 

 
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Dr. Petr Zajicek
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