I created a few renders of Ahsoka's lightsabers in preparation for the upcoming episodes of Ahsoka. They were made in Blender and the first and third images were touched-up in Photoshop.

I prefer the first image because of the volumetric lighting. To create the vines I used an addon called 'IvyGen' and to create the cracks in the stone I used the addons 'Cracker' and 'OCD' as well as displacement in the stone material. 

Unfortunately BBS compresses the images to reduce size (when they are uploaded), so these aren't at their best (4K) quality. 

I downloaded the models of Ahsoka's lightsabers here.