Skeletal quartz, smoky quartz – Val Giuv, Graubünden, Switzerland
 Skeletonized smoky quartz from the famous Val Giuv in the Swiss canton of Graubünden. This beautiful skeletal quartz is a masterpiece of nature. The skeletonization has created a unique abstract sculpture. Skeletonized smoky quartz is even rarer than skeletonized rock crystal.
 The Val Giuv, near Sedrun in the Surselva region of the canton of Graubünden, has always been synonymous with the special color and quality of Swiss smoky quartz, which distinguishes it from other quartz.
 Under the most difficult conditions, the crystals are recovered by the prospectors at an altitude of approximately 3,000 meters.