Dims: 4.51x3.11x3.04" (11.46x7.91x7.73cm)
Wt: 15.77oz (447g)
(lab grown, probably USA)
This is a most unusual specimen of silicon. Generally, we see common boules used to make computer chips, or sometimes re-melts of ship components, but this is different. The outside is rough, a texture imposed by the container in which it formed, except for the narrow bottom (in the image) which is quite smooth but with some texture (almost like it was spray-painted). The inside (see the top view) has the typical feel and luster of silicon boules, with a concentric and somewhat hollowed-out growth pattern that defies my understanding of how it could have formed. There is a moderate amount of damage, almost entirely to the thin, fragile edges of the rim. I do like this oddity.