This Petoskey Stone Round bracelet is silver plated and is for folks of all ages. The Petoskey Stone is the Michigan state stone. The round stone measures approximately 25mm round and is handcrafted by artisans with combined experience of over 60 years. The stone is set on a silver plated open cuff bracelet that measures approximately 2-1/2” wide by 2-1/4” deep for slipping on and off.