D&D 5e PHB Page 149 (Uses Dart Block) AND D&D 5e DMG Page 41

Shuriken

Weapon Finesse, Thrown Common

A metal throwing star that can be used as a improvised dagger or item of distraction. When thrown it pierces into an opponent, but is unlikely to cause deep wounds.   Not all shuriken are manufactured the same. Variances include more or less points (generally a minimum 3), or even curved points. The design can be simple or ornate, and despite the variances, all shuriken cost the same at only five copper.

Cost: 5 cp Weight: 1/4 lb.