Synthetic diamonds and real diamonds both have the same level of hardness. They both rank 10 on the Mohs scale of hardness.
While diamonds are the hardest natural substance, Synthetic aggregate diamond nano-rods are harder than natural diamonds. To the best of my knowledge, that's as hard as it gets.
The difference is big: synthetic diamonds are real diamonds and repeat all properties of natural diamonds, simulants are just trying to copy the brightness of the valuable gemstone. Synthetic's price is usually much higher than simulants. For more information on simulants and real diamonds follow the attached link.
Diamonds are harder than chalk.
Diamonds aren't always sharper, but they can be manufactured in such a way. Diamonds are harder than steel.
Yes
One of the hardest substances on earth, only a diamond is hard enough to cut other diamonds. It is possible only because the hardness of diamond varies widely according to the direction in which one is trying to cut or grind. Therefore a harder diamond is used to cut one that is slightly softer (due to impurities).
Yes, diamonds can cut glass, because diamonds are harder than glass.
No, diamonds are harder than coal. Diamonds are one of the hardest natural materials on Earth, while coal is relatively soft and brittle.
A real diamond is generally more valuable than a synthetic diamond due to its rarity and natural creation process. Real diamonds are formed deep within the Earth's mantle over millions of years, while synthetic diamonds are created in a controlled laboratory setting. These differences in origin and scarcity contribute to the higher value of natural diamonds.
No. No substance known to exist is harder than diamond and especially no other element.
Diamonds are the hardest mineral known. Metal refers to metallic materials, and there are many of them. In order to give a 'yes' or 'no' answer to your question, you must specify which metal. Always, however, diamonds are harder than any metal; the number of times harder, then depends on which metal is being compared to diamond in hardness.
Yes, diamonds are harder than quartz on the Mohs scale, so diamonds can scratch quartz.