Gallium if you hold it in your hand for a while, it will start to melt.

Gallium has a melting point of 29.76 ° C. If you hold it in your hand for a while, it will start to melt.

The gallium is a brittle solid shiny metal to solidify soft, gray and silver liquid, low temperature melting at temperatures close to ambient (such as cesium, rubidium and mercury) and even becomes liquid when hold in hand because of its low melting point (29.76 ° C). The temperature range in the remaining liquid is one of the highest of the metals (2174 ° C separated their melting and boiling points) and the vapor pressure is low even at high temperatures. The metal expands by 3.1% to solidify and float in the liquid like water ice.