MATERIAL: Hypoallergenic stainless steel and natural stones, the elastic used for assembling the bracelet has a diameter of 1 mm, very resistant to tension, maintaining its elasticity over time. Very lightweight, it can always be worn and is not affected by contact with water. STEEL ELEMENTS: Central skull with a polished finish, diamond-cut stainless steel spheres with a diameter of 8 mm TYPE OF STONE: Obsidian STONE SIZE: Approximately 8 mm - spherical shape - polished finish SIZE: Can be worn on wrists with a diameter of 17 to 19 cm GIFT PACKAGING: The bracelet is delivered inside its gift box along with the warranty certificate.