A beautiful thumbnail cluster of water-clear, glassy, purple sugilite crystals INSIDE OF quartz from the 1983 find at the famous Wessels Mine of South Africa. Sugilite is a very rare lithium silicate, not often found in such gemmy crystals. This was a onetime occurrence and even a tiny thumb like this is a real treasure to those who value such odd and rare finds! 1.4 x 1.2 x 0.8 cm