Moonstone is the birthstone for the month of June. It is associated with divine and feminine energy. Moonstone enhances psychic abilities and intuition. Some of these have blue or rainbow flash and Schiller. Check the photos for measurement next to a quarter, which is approximately one inch. The picture shows the quality of the item you will receive. The individual colors, size, and flash may vary. The price listed is for one 100 gram lot (sample pictured).