This is a fantastic set of Benitoite, what’s great about this set is it exhibits the mineral in both its crystal shape, and also in the gemstone form, which is the rarest form for this mineral. This set has amazing color, and triangular shape. The gemstone measures 2.5mm and is eye clean, and has great dispersion. The crystal is triangle shaped and has great color and some clarity! Would look great in your collection or as a gift to someone who collects gems, and wants to have a piece of the California State gemstone!