For these unique earrings of 18k gold vermeil, I've selected teardrop cabachons of "All Natural", finest, Turkish blue chalcedony, with its sought after ghostly glow of blue/lilac, along with the finest Ethiopian welo opals.
 
The opals measure at a nice size of 9x7mm with rainbow flashes of color that are bezel set, followed by a petite faceted cubic zirconia and bold full briolettes of natural chalcedony at 18mm x 12mm.
 
Overall length including the earwires is 1.45 inches.