If diamond is the hardest substance on earth and only a diamond can cut a diamond, how was the first ever cut diamond cut???
You can destroy diamond. You can't scratch it. You can cut it though.
They have might have used a explosion
Diamond is the hardest substance, however it is not the strongest. A piece of quartzite can break a diamond along the plains of weakness, however the quartzite cannot scratch the surface of a diamond. Short answer, diamonds are hard and brittle.
challenging point try searching onto a search engine this will help
With another Diamond. Now we use lasers.