The inlays are 24K gold, rose gold,green gold, platinum,silver,copper and brass.
If you take into consideration the gun metal gray,the ivory grips, and the blued screws, there are 10 different colors total.
I'm looking at the picture I posted and it seems a little less than sharp. I'll get a better picture of it shortly.
Great work Brian, but I think that an engraver with your drive for perfection; will keep looking at the work and decide that there a few more places that could use (Just a little touch here or there.) P.S.Have a great day.