Here they are in order of release...
Cocobolo - medium color wood with an oil finish. Tends to darken with age and use.
Black Linen Micarta - there is enough curvature to the scales that you get to see a little of the "grain".
Evrina - Japanese immitation ivory, looks very much like white paper micarta, but takes scrimshaw much better.
Tiger Coral, a fossil coral background color is a light tan, veins run from carmel, through brown to almost black. I believe it has been stabilized as it has a rather "plastic" feel to it.
Apple Coral, another fossil coral background color is an amost brick red, with both blackish and off white veining. As with the Tiger Coral, I believe it has been stabilized as it has a rather "plastic" feel to it.
Gold MoP
Turquoise - think it may be reconstituted, which is not a bad thing, since natural turquoise tends to be a bit soft.
As I said, the Evrina takes scrimshaw well...
...Needless to say, with the exceptions of the black micarta and Evrina, these are all natural materials, so color and pattern can vary considerably between specimens.