Calcite – Elmwood Mine, Tennessee, USA
 
8 cm x 4.2 cm scalenohedron twin calcite on matrix. Transparent all around with beautifully intensely colored zones. The Elmwood Mine near Carthage in the US state of Tennessee is one of those sites that immediately causes collectors to associate it with the best type of mineral. In this case scalenohedron twin calcite with the distinctive gold-cognac appearance.