The Moon Trio Necklace has been cast in bronze and filled with crushed gemstones of your choice.  Hangs on an antique brass chain with lobster clasp, your choice in length for optimal layering. 
 
Pics show kyanite (light blue/grey), pink opal, green opal (olive green), amazonite (sea green), mother of pearl, malachite (forest green), blue goldstone (dark blue/black shimmer).