You know there is one of the stone named - Ethiopian Opal Beads which even made Ethiopia's Queen Sheba adorable when she went to meet King Salomon. Ethiopian Opal a most diverse and spectacular form of stone which can change its color is one of the most excellent qualities of opal source. The transparency of this Opal is so high that even the transparent sea allows it to carve or crap the colors evenly in this Gem.