A lightsaber, featuring a single green blade, was the personal weapon of Jedi Reath Silas throughout the High Republic Era.
The power source for Reath Silas's lightsaber was a green kyber crystal; furthermore, the hilt was adorned with a green crystal and golden embellishments that stretched from the emitter all the way to the endcap.
The first appearance of Reath Silas's lightsaber was in the young adult book, The High Republic: Into the Dark, penned by Claudia Gray. This book was released on February 2, 2021 as part of the Star Wars: The High Republic publishing project.