Hello, 
I spent a good hour working on my new plugin and tried implementing an old Glow method found here: https://github.com/kicjow/Crazy-Crates/blob/5e032178ce07d2d2fc700d86abaa47373ccfa268/src/main/java/me/badbones69/crazycrates/api/objects/ItemBuilder.java#L400v
This method did not work as the enchantments would vanish after setting ItemMeta. I printed out the keySet of enchantments after adding DURABILITY and LUCK to stone and it was nothing. But setting the ItemMeta before adding unsafe enchantments will work as seen in this post: https://www.spigotmc.org/threads/adding-glow-to-items-in-1-13.342143/