Moonstones are one of my absolute favorite stones and they are never seen in full drop briolettes in large sizes.  I recently had these custom manufactured for me and had to wait quite a while for the manufacturer to source larger roughs for these beauties.
 
These beauties measure at a bold size of 28mm x 12.5mm in full drops, with lovely color when viewed at certain angles.  I've embellished them with filigree beadcaps of oxidized sterling silver that are handcrafted by Bali artisans along with complimenting earwires of the same.
 
Overall length is 2-3/8"