How do I combine Metal and Gem in Doodle God?

In Doodle God, combining Metal and Gem does not directly create a new element. However, both Metal and Gem are important elements that can be used in various combinations to unlock other items. To progress, you should experiment with these elements by pairing them with others. For example, Metal can be combined with Fire to create Energy, or with Stone to create Tools. Gem, on the other hand, can be combined with Pressure to create Diamond, or with Sand to create Glass. If you are looking to unlock new elements, try combining Metal and Gem with other categories like Energy, Stone, or even Life to see what new items you can discover. Remember, experimentation is key in Doodle God, so keep trying different combinations to advance through the game.