Rio 2022 Diamond Coin

The Rio 2022 Diamond Coin was earned during the IEM Rio 2022 Pick'Em event by upgrading the Rio Event Coin through successful challenge progress. That required activating the Viewer Pass during the event and completing every stage of the Pick'Em track at the highest level. It was a time-limited tournament reward, so it is no longer obtainable through normal gameplay.

There was not a single fixed number of correct picks that guaranteed the Rio 2022 Diamond Coin. You had to complete all coin upgrade tasks across the tournament stages, which meant making enough correct Pick'Em predictions in the Challengers, Legends, and Champions phases. Missing key stage requirements usually prevented the final diamond upgrade even if several individual picks were correct.

No, the Rio 2022 Diamond Coin is not generally considered the rarest diamond coin in CS2. Older major coins with lower event participation or tougher Pick'Em completion rates can be seen less often, and rarity is not officially published by Valve in exact circulation numbers. Rio 2022 is better understood as a tournament collectible tied specifically to that Major rather than the clear rarest diamond coin overall.

No, you can no longer earn the Rio 2022 Diamond Coin because the Rio 2022 Pick'Em event ended when the Major concluded. Unlike service medals or some account coins, Major event coins are tied to a specific tournament window. If you did not complete the Viewer Pass challenges during Rio 2022, there is no current way to unlock it now.