Black onyx is a form of chalcedony, which is a variety of quartz. Black onyx or black agate is most commonly recognized as a solid black stone although it will often be mixed with white lines or banding running through it. Whether solid black or striped, the stone is prized for its pure black sheen and high polish. 
Black onyx was used for jewellery by many ancient cultures. It has been found in tombs in ancient Egypt, and onyx is mentioned in the Bible.

Some of these bracelets feature black lava stone beads, which naturally diffuse essential oils. Simply add a few drops of your favorite essential oil to the lava stone and enjoy. 

Each bead is skillfully polished individually, then drilled to create this colorful bracelet. Connected with jewellery elastic, this bracelet stretches to fit. Perfect for stacking with other bracelets or just to wear on its own. A must-have staple for any jewellery box.

This piece contains authentic stones, and no two are exactly alike. The item you receive may have slight variations from the one photographed.