Rock crystal

Wonderful super-sized  natural crystals from Brazil. These giant crystal clusters weight up to several kilograms and are up to 35 cm long.

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Amethyst flower, Crystal
Ametista du Sol, Rio Grande du Sol, Brazil

Item-No.: MIN5441
Price: 140.00 EUR 
Quartz with Arsenopyrite
Panasqueira Mine, Couto Mineiro da Panasqueira, Panasqueira, Covilhã, Castelo Branco District, Portugal

Item-No.: MIN5436
Price: 48.00 EUR 
Rock crystal
Fibia, St. Gotthard, Switherland

Item-No.: 3770
Price: 96.00 EUR 
Rock crystal
Santa Rosa, Minas Gerais, Brazil

Item-No.: MIN5568
Price: 215.00 EUR 
Rock crystal
Doce Valey, Minas Gerais, Brazil

Item-No.: MIN5915
Price: 315.00 EUR 
Rock crystal
Santa Rosa, Minas Gerais, Brasilien

Item-No.: MIN1583
Price: 340.00 EUR 
Rock crystal
Santa Rosa, Minas Gerais, Brasilien

Item-No.: MIN1586
Price: 452.00 EUR 
Rock crystal
Santa Rosa, Minas Gerais, Brasilien

Item-No.: 7959
Price: 183.00 EUR 
Rock crystal
Santa Rosa, Minas Gerais, Brasilien

Item-No.: 1796
Price: 489.00 EUR 
Rock crystal
Santa Rosa, Minas Gerais, Brasilien

Item-No.: 1797
Price: 849.00 EUR 
Rock crystal
Santa Rosa, Minas Gerais, Brasilien

Item-No.: 1799
Price: 182.00 EUR 
Rock crystal
Santa Rosa, Minas Gerais, Brasilien

Item-No.: 1800
Price: 276.00 EUR 
Rock crystal
Santa Rosa, Minas Gerais, Brasilien

Item-No.: 1805
Price: 299.00 EUR 
Rock crystal
Santa Rosa, Minas Gerais, Brasilien

Item-No.: 1808
Price: 763.00 EUR 
Rock crystal
Santa Rosa, Minas Gerais, Brasilien

Item-No.: 1810
Price: 692.00 EUR 
Rock crystal
Santa Rosa, Minas Gerais, Brasilien

Item-No.: 1812
Price: 124.00 EUR 
Rock crystal
Santa Rosa, Minas Gerais, Brasilien

Item-No.: 1814
Price: 174.00 EUR 
Rock crystal
Santa Rosa, Minas Gerais, Brasilien

Item-No.: 1816
Price: 690.00 EUR 
Rock crystal
Santa Rosa, Minas Gerais, Brasilien

Item-No.: 1822
Price: 497.00 EUR 
Rock crystal with chalkopyrite
Cavnic, Romania

Item-No.: 0300086
Price: 160.00 EUR 
Rock crystal with chalkopyrite
Cavnic, Romania

Item-No.: 0300081
Price: 90.00 EUR 

Synonyms:  Rock Crystal, Alaska Diamond, Mountain Crystal, Unripe Diamond, Vallum Diamond
Variety of:  Quartz
Classification:  Oxides
Chemical formula:  SiO2
Crystal system:  Trigonal
Density (g/cm3):  2,65
Tenacity:  Brittle
Cleavage:  none
Fracture:  Conchoidal
Hardness (Mohs):  7
Colour:  A transparent colourless variety of quartz
Lustre:  Vitreous
Streak:  White
Application:  famous as a semi precious jewelry stone, optical industry

 


 

 


 

 
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Dr. Petr Zajicek
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