Diamond Buenos is a fast little test of shape memory set in a glittering violet vault. Dark gem shadows fill the board while their bright, cut twins — an oval, a heart, a cushion and a trillion — sit in the tray below. Pick a stone, hunt down the shadow that matches its outline and tap to lock it in before the fifteen-second clock empties. Each clean match tops the timer back up and stacks your score, and stringing matches together keeps the points climbing, so rhythm matters more than luck. Clear every shadow and a fresh set slides in; reach fifty matches to win, or watch the clock run out and the vault shuts. A saved top-five leaderboard and a pause menu round it out. Bright, quick and quietly moreish once the shadows pile up.