It is dia mond . . . diamond.
On the scale from 1 to 10, diamond is the hardest at 10.
10
Synthetic diamonds and real diamonds both have the same level of hardness. They both rank 10 on the Mohs scale of hardness.
Diamonds are listed on the Mohs Scale of hardness, and occupy the hardest rating at 10.
Synthetic diamonds have the same hardness as real diamonds because they are made of the same material, carbon atoms arranged in a crystal structure. Both synthetic and real diamonds are the hardest natural material known, scoring a 10 on the Mohs scale of mineral hardness.
Diamonds are the hardest substance on Moe's Hardness Scale and as such don't have a determined streak color (since streak is determined usually by a clay tablet of hardness ~3)
Diamond
The mineral with the greatest hardness is the diamond.
The diamond has a rating of ten (10) on the Mohs scale of mineral hardness. On an interval scale, it has an absolute hardness of 1600 compared to 1 for talc. It is the hardest naturally occurring mineral, with only aggregated diamond nanorods (also known as hyperdiamonds) being harder.
Diamonds are hard based on the matrix -- lattice structure -- of the carbon atoms that form the mineral.
No, water cannot cut diamonds. Diamonds are one of the hardest natural substances, ranking a 10 on the Mohs scale of mineral hardness. Water, even at high pressure, does not have the hardness or abrasiveness to cut through a diamond.
Emeralds are compound of Boron, Aluminum and silicate. They are far less tougher than diamonds. Measured on mosh scale of hardness for minerals emeralds value is less than 8.0. On the same scale hardness of diamonds is 10.00
Most diamonds are used in industry and not in jewelry. Their hardness makes diamond useful as a cutting tool.