Yes.
What I did was mix up the epoxy putty, waited for it to set up a little bit, shaped it as I wanted, covered it with Saran Wrap, and then pressed the point of the quartz into it so it stood up on its own. Let it cure overnight and when I lifted the quartz out it left a perfectly formed pocket in the putty. Applied a reddish oil ground to simulate Armenian bole, then gilded it and voila.
I used the same technique on the copal sculpture, but glued it in. Copal is fragile compared to its much older relative, amber.