Gemstone Drawing

When I was little, I used to paint pewter figurines.  They were about an inch tall, and the ones that I liked often had little gemstones on them.  I used to try to make the little pewter gemstones look like they were actually pooling and reflecting light like real gemstones.  Its much more difficult in 2D, I would say, but that was my intention here.  The background is a modified metal texture from CG Textures, which is a great free texture site.