This natural Boulder Opal Bracelet has fabulous bright green opal colours sparkling from the tan ironstone. This type of Boulder Opal is called Matrix Opal…….where the ironstone is naturally impregnated with bright flashing colours of opal. The organic free form shape measures 28mm long x 18mm wide. The bracelet comes with waxed cotton with slip knots to adjust the length to suit all sizes of wrist. This style of bracelet is very popular with men, ladies, teenagers…….just about everyone.