Mineral: Beryl (variety emerald), Calcite, Pyrite
Locality: Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
Dimensions: 102x36x87mm, xl=13mm

Description: This is the best I could do to capture the linear markings all over the prism faces. Growth, dissolution, else...?

All pictures, text, design © Forum FMF 2006-2025