As usual, I used polyester resin. The sparkle mica (looks more like teal to me than turquoise) is a bit of a letdown. While the surface is every bit as smooth as on the clear part, the sparkle makes it appear rough. I think the effect is achieved by using fine granules of glass/silicon added to the mica but it might be synthetic. The knot isn’t set because I’m thinking a black synthetic would look best in this handle. What knot do you think I should use?