DescriptionThese crushed stones are natural black obsidian, reflect light beautifully and have dark black color. smooth, square large tumbled crystal stones. Can calm the nerves. Good for health. Reduce electromagnetic radiation,and demagnetizing. Good for jewelry design, art design, stone collecting, resin, grids, wishing bottles, glass fairy bottles, potted inlay wood works, decor, houseplants, garden, fountain and more.Features- Color: Black. - Material: Obsidian. - Size:4.00 x 3.50 x 3.50cm/1.57 x 1.38 x 1.38 inch. - Each rough black obsidian quartz stone is irregular, unpolished and rough and the quantities of stone depends on size and weight of each stone. - These black obsidian quartz crystal rough raws stones can be used in energy, tumbling, decoration, jewelry making. - Also suitable for chakra balancing, reiki or other metaphysical practices and more. Perfect gift for beginners or collect crystals. - Obsidian is believed to encourage strength, integrity and grounding. - It is said to dissolve fear and is a wonderful crystal to have with you.