that is a really beautiful and unusual piece you have there.
I see what looks like a turquoise color predominantly but then that striking part that as you described is royal blue.
the colors are set in what looks like milky white quartz.
honestly, if a piece like that called out to me, my first impression would be that a new mystery just kind of happened to me. am I right that there are three different kinds of stone in that piece?
if so I would think about combinations of three perhaps.
anyway, what a beautiful piece. Congrats on it finding you!