Quartz
Amethyst quartz
Báňská Stiavnica, Slovakia
Item-No.: MIN5993
Price: 70.00 EUR
Quartz
Pribram, Schacht Lill, CZ
Item-No.: 0300106
Price: 25.00 EUR
Quartz
Mina Nasca Ica, Peru
Item-No.: 3787
Price: 89.00 EUR
Quartz
Mina Nasca Ica, Peru
Item-No.: 3802
Price: 98.00 EUR
Quartz
Amethysta do Sul, Rio Grande do Sul, Brazil
Item-No.: MIN6025
Price: 48.00 EUR
Quartz
Březové Hory, Příbram, Czech Republic
Item-No.: MINS1653
Price: 6.00 EUR
Quartz
Ametista do Sul, Rio Grande do Sul, Brasil
Item-No.: MIN0982
Price: 58.00 EUR
Quartz
Touissit, Touissit District, Jerada Province, Oriental Region, Morocco
Item-No.: MIN1326
Price: 76.00 EUR
Quartz
Aurora Mine, Charcas, Mun. de Charcas, San Luis Potosí, Mexico
Item-No.: MIN0236
Price: 87.00 EUR
Quartz
Libodřice, Kolín, Central Bohemia Region, Bohemia, Czech Republic
Item-No.: MIN0344
Price: 22.00 EUR
Quartz after Danburite
Aurora Mine, Charcas, Mun. de Charcas, San Luis Potosí, Mexico
Item-No.: MIN0263
Price: 115.00 EUR
Quartz with Arsenopyrite
Panasqueira Mine, Couto Mineiro da Panasqueira, Panasqueira, Covilhã, Castelo Branco District, Portugal
Item-No.: MIN5436
Price: 48.00 EUR
Quartz with Hematite
Zaječov, Beroun, Central Bohemia Region, Bohemia, Czech Republic
Item-No.: LM63
Price: 29.00 EUR
Quartz, Calcite, Sfalerite
Pribram, Schacht Lill, CZ
Item-No.: 0300117
Price: 10.00 EUR
Quartz, Sfalerite
Cavnic (Kapnic), Maramures, Co., Romania
Item-No.: MIN5790
Price: 165.00 EUR
Scepter quarz
Andranondambo, Maromby Commune, Amboasary Department, Anosy (Fort Dauphin) Region, Tuléar (Toliara) Province, Madagaskar
Item-No.: KR2237
Price: 17.00 EUR
Scepter quarz
Andranondambo, Maromby Commune, Amboasary Department, Anosy (Fort Dauphin) Region, Tuléar (Toliara) Province, Madagaskar
Item-No.: KR2238
Price: 17.00 EUR
Scepter quarz
Andranondambo, Maromby Commune, Amboasary Department, Anosy (Fort Dauphin) Region, Tuléar (Toliara) Province, Madagaskar
Item-No.: KR2239
Price: 17.00 EUR
Scepter quarz
Andranondambo, Maromby Commune, Amboasary Department, Anosy (Fort Dauphin) Region, Tuléar (Toliara) Province, Madagaskar
Item-No.: KR2240
Price: 17.00 EUR
Scepter quarz
Andranondambo, Maromby Commune, Amboasary Department, Anosy (Fort Dauphin) Region, Tuléar (Toliara) Province, Madagaskar
Item-No.: KR2241
Price: 17.00 EUR
Scepter quarz
Andranondambo, Maromby Commune, Amboasary Department, Anosy (Fort Dauphin) Region, Tuléar (Toliara) Province, Madagaskar
Item-No.: KR2242
Price: 17.00 EUR
Siderite and quartz
Rudňany, Spišská Nová Ves Co., Košice Region, Slovakia
Item-No.: MIN0161
Price: 28.00 EUR
Zepterquarz
Bánská Stiavnica, Slovakia
Item-No.: 3794
Price: 75.00 EUR
| Synonyms: | Alpha-Quartz, Azetulite, Brazilian Pebble, Lake County Diamonds, Lemurian Seed Crystal, Lodolite, Low Quartz, Mexican Diamond |
| Classification: | Oxides |
| Chemical formula: | SiO2 |
| Crystal system: | Trigonal |
| Density (g/cm3): | 2,65 - 2,66 measured, 2,66 calculated |
| Tenacity: | Brittle |
| Cleavage: | none |
| Fracture: | Conchoidal |
| Hardness (Mohs): | 7 |
| Colour: | Colorless, purple, rose, red, black, yellow, brown, green, blue, orange |
| Lustre: | Vitreous |
| Streak: | White |
| Application: | Ore for silicon, glassmaking, frequency standards, optical instruments, silica source for concrete setting, chemical industry - filtering agents. |