Locality: Tepetate, Villa de Arriaga Municipality, San Luis Potosí, Mexico
Size: 26 mm x 21 mm x 18 mm (1.0 in. x 0.8 in. x 0.7 in.)
Weight: 5.9 g (0.21 oz.)
Thumbnail specimen of translucent champagne topaz to 23 mm, a relatively large size for this locality. The crystals are terminated, and there are reddish brown rutile inclusions in the smaller ones. There is also white hyaline opal near the termination of the tallest crystal, which fluoresces green in short wave UV light.