This handle is polyester and imitating abalone. Search you favourite knife supplies store for ideas, I use mostly brisa.fi

Hardest part in this pick was taking this pic so that those colours show!
-Off topic begins-
Originally I bought it to make this folding knife

but had to change plans because it was a little bent, so I went with G10 as handle material in that one. It has scratches because it´s not a show item...
And next time I take a course in damascus making I´m definitely going to produce something lock picking related!
-Off topic ends-
One more still to come during this week...