Rainbow Pyrite Druzy Rainbow pyrite is a recent find from Russia. The material comes in the form of "druzy" - a layer of miniature pyrite crystals coating a matrix. It displays a shimmering rainbow of colors, including shades of gold, green, pink and blue. Pyrite is named for the Greek word for fire, since it produces sparks struck with steel. Pyrite is opaque with metallic luster and it can be iridescent.
I love GemSelect, personally. I browse their site almost daily to see all the new stones available. Their selection is pretty amazing. The quality isn't always the highest and the cut of the stones isn't always perfect. But for the price, and if you look hard enough, you can find a real gem, so to speak.