Questionnez la Communauté
Ask any professional question and get answers from other specialists.
A. Platinum B. Diamond C. Quartz D. Gold
the hardest naturally occurring substance found on Earth is Diamond
The hardest substance is b. Diamond
the diamond is the hardest B. Dimond
It is Diamond, Please refer to Moh's scale in General Geology
The hardest substance available on earth is option B. Diamond