--- On Wed, 11/23/11, Horace Heffner <hheff...@mtaonline.net> wrote: > Most interesting! "Garnet is desirable because it > inherently transmits light differently in one direction than > in another: It has a different index of refraction — the > bending of light as it enters the material — depending on > the direction of the beam."
Hmm. As far as I knew, garnet was one of the few isotropic gems. It isn't birefringent AFAIK, and I'd guess my wife isn't about to let me go near her jewelry cabinet to find out! What am I missing? --Kyle
