The use of the The use of the gemstone jade plays a vital role here, thanks to its ability to maintain a cool temperature, despite being exposed to body heat. In fact, one of the ways to tell if it’s really jade in the first place is to place the stone in the palm of your hand. If it warms up, then it’s not jadeplays a vital role here, thanks to its ability to maintain a cool temperature, despite being exposed to body heat. In fact, one of the ways to tell if it’s really jade in the first place is to place the stone in the palm of your hand. If it warms up, then it’s not jade