Onyx has a long history of use for hardstone carving and jewellery, where it is usually cut as a cabochon or into beads. It has also been used for intaglio and hardstone cameo engraved gems, where the bands make the image contrast with the ground. Some onyx is natural but much of the material in commerce is produced by the staining of agate. The main sources of onyx are India and South America, but it is also found in China, Madagascar, Mexico and the U.S.A.
Use a tape measure. Wrap the tape measure around the wrist on which you plan to wear your D.C.I bracelet. To ensure the bracelet fits comfortably, add 1.5 cm. You can then add or subtract centimeters according to whether you prefer a loose, exact or tight fit. If you don not have a tape measure, use our Wrist Sizer: Download and print the D.C.I Wrist Sizer.
Download the D.C.I Wrist Sizer for A4 format.
Download the D.C.I Wrist Sizer for Letter format