Muscovite 10mm Inner circumference 16.3 ★ Muscovite is also said to have a healing effect, stabilizing the mind. It is said to relieve tension and stress, relaxing the mind and body. This brings the mind and body into a balanced state, providing mental stability. It is also recommended for those who tend to overwork themselves and find it difficult to relax ★ Please refrain from purchasing if you are looking for perfection, as natural stones are natural products (・̑◡・̑).