Diamond
Allotrope of carbon often used as a gemstone and an abrasive
Can a diamond float on water?
Diamonds are formed by extreme heat and pressure being applied to carbon under the earth's crust. The density of a diamond is 3.51 g/cm³. The density of water is 997 kg/m³. A diamond is more dense than water. A diamond will sink in water.
What is the density of a diamond? What is the density of water? Is #1 less than #2?