Dims: 0.6 x 0.5 x 0.2" (1.6 x 1.2 x 0.5 cm)
Wt: 1-2 g
This small thumbnail specimen consists of a shapeless chunk of Iolite. It shows no visible crystal form and all of its surfaces show the curvature of conchoidal fracture. It appears to have been heat-treated, as it shows no pale brown color when viewed from any angle- the only pleochroic colors that are visible are a pale blue-violet and a deep violet. The piece is transparent and quite clear, however. No host rock is present, and the specimen is affixed inside a plastic specimen box with a removable putty.