The pics aren't very good but the crystals are 6 sided with 2 long sides and a short side on each end. The other pics are of the same material but massive.
Interesting, its garnet but it shows cubit crystallization. Unusual view. The broken pieces show there is no real cleavage, typical for garnet. My thoughts.
I've never seen garnet crystals that look like these. The shape is like a diamond with the long points squared off, but you may be right. I looked through the rock book and couldn't find any crystals with that shape other than mica and it's not mica. Thanks for the replies.