You can purchase these bracelets individually or as a set. 
They are of an excellent quality material that doesnt turn or tarnish.
 
You can choose a different crystal color than pictured above ( Sapphire, light sapphire, Emerald, Rose(Pink), Siam (Red), Amethyst (Purple), Peridot(light reen), garnet, aquamarine, jet black, or all gold,