| S.No. | Properties | Graphite | Diamond |
| (i) | Hard/Soft | It is a hazy/ opaque substance on touch. It is smooth and slippery. | Transparent, hard easily cracks. |
| (ii) | Structure | In graphite carbon atom on same surface joins three carbon and form a hexagonal structure.
Such surface are bonded with weak bonds hence they can slide on each other. So, they are soft. | In diamond it joins with other nearest four carbons and forms a hard three dimensional structure. |
| (iii) | Electricity Conduction | It is good conductor of electricity. | It is bad conductor of electricity but good conductor of heat. |
| (iv) | Use | It is used in electric arc and dry cells. | It is used in jewellery, cutting, grinding, hole passing etc. |
