Sterling silver brooch with rounded square-shaped rutilated or rutile quartz stone by Erik Granit (1930-1988) of Helsinki, Finland. Erik Granit established his own workshop and design company, E. Granit & Company, at age 26 in his native Helsinki, Finland. E. Granit & Co. is known for its sculptural, modernist forms and its use of native materials of Finland, including quartz, amethyst, and spectrolite stones. This brooch is almost 1.5 inches on the diagonal and 1.25 inches square, and the…