Crystal spheres are extra special- believed to radiate energy in all directions equally and they represent wholeness and completion so are wonderful as crystal grid focal stones or for meditation and manifestation crystals. I have three crystal options available (Select crystal option at checkout): Amethyst - Crown chakra, spirituality, imagination, creativity. Soothing and calming. Rose quartz - Heart chakra, love, romance, friendship, openness and inner peace. Selenite - Crown Chakra, purity, cleansing, harmonizing. These spheres vary slightly in size but are approx 4 - 5cm in diameter. Please note: Price is for a single sphere only. Prices vary depending on crystal option. Remember selenite is a soft, delicate (but beautiful) crystal but should never be submerged in water as this may cause it to fracture.