Size of obsidiandonuts 3.5cm; diameter of the hole about 6.2mm, so not suitable for donut spirals.
Gold luster Obsidian is used in stone healing to dissolve deeply rooted negative attitudes and blockages.
Other names for this obsidian are gold obsidian or silk sheen obsidian. In "Game of Thrones," Obsidian is referred to as dragonglass, dragon glass, or zirtys perzys ("frozen fire").