Anticlastic raising is a technique that was developed over 2,500 years ago by the Irish During the late bronze age. They created waist bands or over the shoulder adornment, and necklaces. These items were made primarily of high karat gold. They hammered torque necklaces and other artifacts using antlers and wood. Today this technique is not very common in the jewelry world due to the extensive time it can take to hammer one bracelet, about 1,000-2,000 hammer blows.