This sculpt release is so huge, I had to make a computer to help you manage and create all the sculpted prims possible!
I took high-detail information on ideal gem cuts from the American Gemological Society and exported the facet vertexes to sculpt data. I then used a supercomputer grid I was renting from Sun to make thousands of hours of calculations in a few seconds, to render 640 textures in parallel. Each gem sculpt has 20 textures rendered - 10 colors in both alpha and non-alpha versions. The alpha versions use the alpha from the radiance buffer of the renderer, thus are accurate to reflections and internal refraction.
I also exported inside-out sockets for the top and bottom of each gem that you can use to back the gems or create bling effects within them - that's 64 bonus sculpt textures!
Here are the gem sculpts pictured from second life with the normal maps shown on them - though Second Life doesn't directly use these maps, they were used by the renderer to define the facets and create the sculpt renders. The waviness inside is the internal reflection from the opposite sides of the sculpts - I intentionally rendered it in this view to create the special rainbow-themed Rave Nation gem textures, one of the ten colors!
Buy it at CyLOGy in Candyland
http://slurl.com/secondlife/Candyland/195/212/28