Adularia - Classic alpine Manebach twin w. iridescence
St Gotthard, Central St. Gotthard Massif, Leventina
8.3 x 5.1 x 3.8 CM (cabinet)
A large and fine old Swiss Orthoclase crystal that is a well formed Manebach twin with fine edge striations. Several older labels included date this back to the 19th century. This Adularia is very large, translucent to transparent and with textbook perfect form. From just the right angle the fine striations make an interesting display of diffraction colors and shows a rich iridescence. Classic and impressive.