Blade and Plate, the rarest rewards on Roshar and never purchasable with currency — they change hands through marriage, debt, duel, or killing the bearer. A Shardblade is a tier 2 reward and Shardplate a tier 3 one, and a duel for one is rarely offered to anyone without a Shard of their own to wager. The Ryshadium is sometimes counted the third Shard, and is granted as a companion.

Summary

Blade and Plate, the rarest rewards on Roshar and never purchasable with currency — they change hands through marriage, debt, duel, or killing the bearer. A Shardblade is a tier 2 reward and Shardplate a tier 3 one, and a duel for one is rarely offered to anyone without a Shard of their own to wager. The Ryshadium is sometimes counted the third Shard, and is granted as a companion.