Crackle Quartz refers to a Quartz stone that has been heated and then cooled in water giving it a "cracked or crackle" appearance.
Lava beads are used for grounding oneself as they come from the earth. Lava is porous and the beads can be can be infused with essential oils. A few drops of lavender essential oil on the beads will leave the wearer calmer, easing any emotional distress.
 
These are paired as sets (2 bracelets)
8mm Blue Crackle Quartz & Lava Stones