Thanks for the mention - yeah, I've rolled them once or twice on a soft surface, but I'd try to avoid using them in a real game. Besides, they'd do as much damage to the table as themselves. Lead and glass are dense. :)
If anyone is interested, I'm still making them to order: http://www.etsy.com/shop/aartifacts
If anyone is interested, I'm still making them to order:
http://www.etsy.com/shop/aartifacts