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> Minerals
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Rock crystal
is the most pure and clear variety of Quartz. The Rock Crystal has already being well known and used 3.800 years b.c. in ancient Babylon. The name is derived from Latin word “crystallus”. The most pure and best crystallized Rock Crystals attends hydrothermal clefts and veins, pegmatites dikes, fills the cavities in SiO2–reach volcanic rocks e.i. Rhyolite, and also grows in sedimentary geodes. Today the biggest aggregates of Rock Crystals coming out of Minas Gerais in Brazil, the most transparent and clear ones can be found within Alps mountains in Europe.
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| Quartz with Arsenopyrite
 Panasqueira Mine, Couto Mineiro da Panasqueira, Panasqueira, Covilhã, Castelo Branco District, Portugal
Item-No.: MIN5436
Price: 48.00 EUR
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| Rock Crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: MIN0385
Price: 468.00 EUR
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| Rock Crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: MIN0395
Price: 1257.00 EUR
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| Rock Crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: MIN0396
Price: 286.00 EUR
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| Rock Crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: MIN0397
Price: 386.00 EUR
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| Rock Crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: MIN0398
Price: 1799.00 EUR
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| Rock Crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: MIN0399
Price: 1870.00 EUR
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| Rock Crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: MIN0390
Price: 110.00 EUR
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| Rock crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: 7959
Price: 183.00 EUR
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| Rock crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: 1796
Price: 489.00 EUR
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| Rock crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: 1797
Price: 849.00 EUR
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| Rock crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: 1799
Price: 182.00 EUR
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| Rock crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: 1803
Price: 149.00 EUR
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| Rock crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: 1805
Price: 299.00 EUR
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| Rock crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: 1808
Price: 763.00 EUR
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| Rock crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: 1810
Price: 692.00 EUR
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| Rock crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: 1812
Price: 124.00 EUR
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| Rock crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: 1814
Price: 174.00 EUR
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| Rock crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: 1822
Price: 497.00 EUR
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| Rock crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: MIN5568
Price: 215.00 EUR
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| Rock crystal
Doce Valey, Minas Gerais, Brazil
Item-No.: MIN5915
Price: 315.00 EUR
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| Rock crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: MIN1583
Price: 340.00 EUR
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| Rock crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: MIN0377
Price: 340.00 EUR
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| Rock crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: MIN0378
Price: 109.00 EUR
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| Rock crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: MIN0382
Price: 82.00 EUR
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| Rock crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: MIN0383
Price: 228.00 EUR
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| Rock crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: MIN0386
Price: 155.00 EUR
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| Rock crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: MIN0387
Price: 316.00 EUR
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| Rock crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: MIN0388
Price: 299.00 EUR
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| Rock crystal
Santa Rosa, Minas Gerais, Brazil
Item-No.: MIN0391
Price: 100.00 EUR
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| 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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