Once you unlock Elemental Throwing Stars at Survivor Rank 4 from the Survival skill tree, you are able to make modified Throwing Stars with three elemental effects such as Burning, Freezing, and Explosive. Despite having to unlock the skill, you will also need certain requirements of components to craft these weapons.
Variant
Components
Burning Throwing Stars
Metal Parts (1)
Chemicals (1)
Alchohol (1)
Explosive Throwing Stars
Metal Parts (1)
Chemicals (1)
Household Supplies (1)
Freezing Throwing Stars
Metal Parts (1)
Underwater Algae (1)
Herb (1)
Flourescent Mushrooms (1)
Trivia
In real life, Shurikens (also known as Throwing Stars in-game) are traditional Japanese concealed weaponry that are used primarily for throwing, as well as slashing and shanking.