Everything to remember about dragonglass for 'Game of Thrones' Season 8

Dragonglass, the all-consuming Game of Thrones weapon, can get a bit confusing.
It can instantly turn the White Walkers into ash yet it's what created the Night King and stopped Benjen Stark from turning undead? Yeah, it’s definitely a lot. 
Dragonglass has been around for centuries. In the context of the show, it was mentioned for a quick second in Season 1 but didn't make its big debut until Season 2. By the time Season 8 rolls around, it’s value has increased tremendously.&nb