Stone Size:20*30mm Material: natural stone As the stones are natural, size and shape may vary. Ideal for healing, chakra balance, positive energy, meditation, deep sleep, gift and many more uses. The glass is perfect for decorating your home and table decoration. Looks great on your coffee table, bedside table, garden or almost anywhere. Easy to carry, perfect for holding in hands for relaxation or anxiety relief, improves meditation. Our crystals are 100% authentic and therefore may vary in color and clarity. You will not necessarily get the exact depth that can be seen in our glass pictures.