Topaz
Topaz
Item-No.: MINS543 Price: 30.00 EUR
Schneckenstein, Erzgebirge Mts., Saxony, Germany
Topaz
Item-No.: MINS612 Price: 33.00 EUR
Schneckenstein, Erzgebirge Mts., Saxony, Germany
Topaz
Item-No.: MINS161 Price: 24.00 EUR
Volodar Volinsky, Ukraine
Topaz Cherry
Item-No.: 0300031 Price: 78.00 EUR
Thomas Ranch, Utah, USA
Topaz Var. Pyknite
Item-No.: MINS1025 Price: 62.00 EUR
Altenberg, Erzgebirge Mts., Saxony, Germany
Topaz Var. Pyknite
Item-No.: MINS830 Price: 26.00 EUR
Cínovec , Krušné Hory Mts, Ústí Region (Bohemia), Czech Republic
Topaz Var. Pyknite
Item-No.: MINS741 Price: 43.00 EUR
Cínovec , Krušné Hory Mts, Ústí Region (Bohemia), Czech Republic
Topaz Var. Pyknite
Item-No.: MINS1010 Price: 12.00 EUR
Cínovec , Krušné Hory Mts, Ústí Region (Bohemia), Czech Republic
Topaz Var. Pyknite
Item-No.: MIN0145 Price: 32.00 EUR
Cínovec , Krušné Hory Mts, Ústí Region (Bohemia), Czech Republic
Topaz Var. Pyknite
Item-No.: MIN0146 Price: 67.00 EUR
Cínovec , Krušné Hory Mts, Ústí Region (Bohemia), Czech Republic
Topaz, Var. Pyknite
Item-No.: 0300035 Price: 45.00 EUR
Cínovec , Krušné Hory Mts, Ústí Region (Bohemia), Czech Republic
| Synonyms: | Chrysolithos, Physalite, Pyrophysalite |
| Variety of Topaz: | Piknite |
| Classification: | Silicates, Nesosilicates |
| Chemical formula: | Al2(SiO4)(F,OH)2 |
| Crystal system: | Orthorhombic |
| Density (g/cm3): | 3,4 - 3,6 measured |
| Tenacity: | Brittle |
| Cleavage: | Perfect on (001) |
| Fracture: | Irregular/Uneven, Sub-Conchoidal |
| Hardness (Mohs): | 8 |
| Colour: | Colourless, white, pale blue, light green, yellow, yellowish brown, or red |
| Lustre: | Vitreous |
| Streak: | White |
| Application: | Gemstone and abrasive |