Can You Solve this Ice Diamond Riddle? ft. Vsauce’s Michael Stevens

This is quite a tricky question. Try to make this example extreme. You have a type of stuff thats look like a little diamond and has a ton of mass. If you throw this diamond in a large icecube in water, the diamond will swim. At this time it will push away water accordung to the mass of icecube and diamond. Interestingly as the icecube melts, the overall density of the partial molten icecube with the embedded diamond will be larger than water. So the diamand will sink. At the end when the icecube is molten, the diamond will rest on the bottom. So the diamond cant push a ton of water away. But the icecube, which pushes away the water in the first place has melted. Through the effect that water will slightly reduce its volume when it warms from 0°C up to 4°C the waterlevel will the  slightly decrease. But in the example of a normal sized icecube in a glass of water this will be not notecibel. So, overall in this example, the waterlevel stay the same. In a high precision example, as the icecube melts, the water level will slightly decrease after you put it in the water.