From the Etsy Description:
The internal mechanisms, gears and moving parts were painstakingly hand-milled and hand-calibrated with absolute precision from 14k gold. The body, mechanical frame and wings were handcrafted from Argentium Silver, far superior to Sterling or fine silver. The body opens up to reveal the intricate inner movements, and fine details that just could not be left forever covered up! The eyes are each large 10 carat Swiss Blue Topaz cabochons and the 14k gold bezel on the tail contains a 4mm Amethyst bullet shaped cabochon.
Here is the listing for the dragonfly on Etsy. Found via the MAKE Blog.