The Horntriskele is 3 horns which is woven into eachother, the symbol is found on runestones.

The horns is also shown on the backside of the pendant.

The Triskele is shown in silver, but can also be made in bronze or gold, it´s about 20mm high (without the top), weighs about 7 gram and has a 2,2mm hole through the top, which fits a leatherlace perfectly.