Pono Bracelet.  Black Obsidian. 
 
Black Obsidian surrounds Lone Sterling Silver Kamea Focal Bead.  Obsidian Stone is a very supportive and protective crystal. It imparts the strength to face the realities it reflects, in keeping with obsidian meaning, so that you can deal with any issues that you need to work through. Obsidian is a very protective stone, guarding against negativity from others and yourself.
 
Measuring Your Wrist:  Use a piece of string and wrap around your wrist then lay it on a ruler.
 
One Aloha.