After posting the last tutorial for making a gem or jewel, I spent some time trying to figure out how to make it look more like a faceted cut gem. This tutorial and the sample shown in the image above is the result. It's still not 100% photo-realistic, but it's a bit closer than the last tutorial which is below this post.
This tutorial was written 20 February 2012 in PSP 9 but should work in other versions of the program. There are some optional basic vector editing steps at the very end of this tutorial so this one may be of interest for that reason even if making a jewel is not.
