Locality: Tepetate, Villa de Arriaga Municipality, San Luis Potosí, Mexico
Size: 53 mm x 36 mm x 19 mm (2.1 in. x 1.4 in. x 0.7 in.)
Weight: 18 g (0.6 oz.)
Gemmy champagne color topaz to 14 mm on rhyolite matrix. A few crystals have dark inclusions (hematite?) at or near the termination. Nice piece from a classic Mexican locality.