3,22 €
- More than 300 minerals and gemstones, from Copper, Gold and Silver to Opal, Kernite and Gismonite
- Each mineral and gem illustrated with a colour photograph
- Information tables include colour, lustre, streak, hardness, specific gravity, cleavage, habit and crystal system
- Accessible text and chemical composition for each featured stone
- Quick search functions by categories of stone
- Favourites section
- All data stored offline on your device's SD card. Internet connection only required for the first database download (ca. 50MB) or for database updating.