This was a custom glyph commission, taken a step further - the purple 'heart' in the center is actually a small piece of paua shell that I carved and inset.
This scan is actually many times the actual size of the piece - actual size being about 1 3/4" x 1 1/2"

Dragonfly has now been added to my online available pendants gallery, along with its symbolism - please check it out! http://foxloft.com/store/tagua/pendant/Dragonfly