Ruby ore

Ruby ore was originally added into Minecraft Java Edition and was a "before" emerald ore, the ruby block had the same texture pattern as the emerald block today. In fact, the ruby ore also looks like the emerald ore today, and rubies were originally the first emerald ingots or ore. But when Notch got rid of the idea, the idea of emeralds were implemented into the game. And in the Java Edition of Minecraft, you could instead trade with villagers by using rubies, but in today's Minecraft, you can only use emeralds.