Sterling and fine silver, 24K gold, agate:  beautiful Montana agates dangle from multi dimensional tops (the piece with the wave is lifted off the back part of the earring) giving these a really nice sculptural look, fused with 24K gold foil in a Japanese process called Keumboo.  5/8" wide by 2-3/4" long from the post.  

Montana Agate Drop Earrings