Hello. I'm Chuck Stover and I create dice. All of the dice in the shop are available in a variety of materials, but they are designed for stainless steel. They look fine in plastic but are very light. Stainless steel has the heft to roll correctly and feel right in your hand.
A d4, d6, d8, d10, d12, and d20. These roll best in stainless steel, but look nice in any material. If you are looking for a great way to carry my dice, please check out the Chainmail Dice Bag (http://www.shapeways.com/model/114719/chainmail_dice_bag.html) by WelshDesigns.