I began with the stones. Having never sculpted miniatures before I thought that I had better start with simple designs. I decided to go with a basic stone-like look for each. Build them out of green stuff, make them look crude (easy enough). Some of the ideas were easy: like the Brain Stone. Others were hard: what does a Soul Stone look like? I stayed with a gray color sceme, based them on 1" circles, and labeled each.
The Soul Stone was the last one I made. It is actually a Reaper minis remounted to match the rest. The Power Stone is made to look like a battery, the Shadow Stone is a piece of Plasticard painted black to resemble a shadow of a stone and the Shield Stone is also a Reaper miniature shield.