My periodic table poster is now available! Native Silver. Description from the source: Silver (Ag cub.), Zacatecas, Mexico. Filamentous with Acanthite and Quartz on matrix. 2x1,5x1,2 cm; 8g. Source: Simone Citon Contributor: John Gray Acquired: 26 September, 2008 Text Updated: 28 September, 2008 Price: Trade Size: 0.75" Composition: Ag