Quartz var. Smoky Val Guif; Graubünden; Switzerland (left, ...
Description: Quartz var. Smoky Val Guif; Graubünden; Switzerland (left, 1990); Switzerland (1931, right) 3.5 x 2 x 1 cm (left); 9.5 x 8.5 x 3 cm (right) A tabular xl and a gwindel