The Complete Guide to Rummy Diamond Inspired by several classic rummy games, Rummy Diamond is an engrossing card game that has developed over time. Its beginnings can be found in the early sb001 technical error1900s, when rummy started to become more and more well-known worldwide. The Mexican game "Concentration" and the American game "Gin Rummy," which served as the foundation for the creation of Rummy Diamond, are thought to be the game's precursors. Rummy Diamond was a novel variation of card games that attracted a broad audience by fusing aspects of strategy, skill, and chance.