These are the 'Beer Dice' manufactured by Artisan Dice. They're tabletop gaming dice containing compressed hops encased in crystal resin,and inlaid with brass numbers. Are they properly balanced? No clue, but my guess is close enough. Unfortunately, or beer dice don't come cheap,and a single d20 will set you back $53, with a total ten die polyhedral set (a d20, and d12,d10, d%, and d8,four d6's, and a d4), and $283. That's a lot of money for dice I'm just going to wind up trying to drink. *swallows a d6,chases with a watermelon Four Loco* Uh-oh. "You okay?" I judge I just rolled fight a stranger!
Keep going for one more shot in case you want to see what $372 worth of d20's looks like.
Source: geekologie.com