ADJUSTABLE FREE SIZE FIT MOST WRIST The cuff is open style and bendable, Flexible enough with a gentle squeeze or slight spreading to adjust it while you need to fit you perfectly. Opal is october birthstone,it means the Lucky,hope,purity and happiness.Send the opal jewelry gift to your lover,which will bring them good luck. MATERIAL 18K White Gold Plated Brass. shinne surface, very smooth with rounded edges to avoid scratch your wrist,nickel-free, lead-free, and cadmium-free.hypoallergenic suitable for almost all of sensitive skins. This bracelet with a high-grade white gold finish to protect from tarnishing. A perfect gift for anyone in your life looking for an October Birthstone, enclosed in a beautiful leatherette gift box. Perfect for teenagers and women of all ages.open sizebent easily can fit for most wrist, girls, women, boy.