Sukhad Couple-Combo Matching Best Friend Relationship Natural Multi Layer Tiple Protection Stone Beads Magnetic Bracelets. For unisex adult. Black and white beaded bracelets are a classic jewelry style that can be dressed up or down. They can be worn on their own or stacked with other bracelets. They are also a popular choice for couples or friends who want to wear matching jewelry. Here are some other details about the bracelets in the image: The beads appear to be made of agate a type of quartz that comes in a variety of colors. Agate is a popular choice for jewelry because it is durable and has a beautiful luster. The bracelets are a medium width which is flattering on most wrist sizes. The knot closure is a simple and secure way to keep the bracelets on your wrist. If you are interested in purchasing a black and white beaded bracelet there are many options available online and in stores. You can choose from a variety of materials colors and styles to find a bracelet that you love.