Tessellation 25 (F)

by Arya Akhavan (September 2013)

Wow, this was surprisingly hard to get to look good. This is an extension of my F series of tessellations, and it's one of the few that uses radial symmetry instead of mirror symmetry. The preform should be very helpful. Works in materials from quartz to rutile (RI = 1.54 - 2.62) with no changes, but I prefer it in standard purple amethyst. Suggested size = 6-12 mm