Polished Rainbow Moonstone Egg - Choose your quantity! Uniqueness Guaranteed: Every item is one-of-a-kind, making them ideal for all projects or designs. Plastic stands are for display purposes only and are not included. Avg Size: (2 Inches Tall) Sizes Vary Rainbow moonstone is closely related to labradorite, as both stones are feldspars that exhibit signature colorful shimmers. Moonstone's signature blue flash, called adularescence, has made it highly desirable in jewelry for centuries. Handmade items vary in size, shape, and color when selected randomly (the highest quality items are chosen first). They'll be as beautiful as those in the photos.