Stromatolite Bat Wire Wrapped Oxidized Copper Pendant

The stone is a Stromatolite. The little bat is synthetic opal, it is a bead and can move (see video). 

The wire is solid copper that has been oxidized and polished for an antique look. The cord necklace is included, it is nylon and is adjustable roughly 18"-20". Please note that copper naturally darkens with age and if necessary may be cleaned to lighten it back up, a polishing pad is included(please don't rub the leaf charm with it as it could remove the color of it).  The last photo shows back of the pendant, it is next to a ruler for size comparison.