Crescent Moon Shaped Opalite Pendant 1" (Chain Not Included) This beautiful crescent moon shaped pendant is made with a natural opalite gemstone that is approximately 1" in diameter. The gemstone is a milky blue color with iridescent flashes of color. The pendant hangs from a sterling silver bail. Opalite is a type of chalcedony that is known for its unique iridescent properties. It is said to be a stone of creativity and imagination, and it is often used to promote spiritual growth.