The comparison between lab-grown diamonds (LGD) and natural diamonds is:

1. Formation Process:

Lab-Grown Diamonds: Grown in a lab.

Natural Diamonds: Formed naturally.

2. Composition:

Lab-Grown Diamonds: Pure carbon.

Natural Diamonds: Pure carbon with a few traces of nitrogen.

3. Crystal Structure:

Both types have a cubic crystal structure

4. Hardness (Mohs Scale):

LGD and natural diamonds both have a hardness of 10, making them the hardest known materials.

5. Refractive Index:

The refractive index for Both is 2.42

6. Density (g/cm³)::

The density remains consistent at 3.52 g/cm³ for both types.

7. Colour and Clarity:

Lab-Grown Diamonds: Colorless to fancy.

Natural Diamonds: Colorless to fancy.

8. Clarity:

Both can exhibit clarity from flawless to grade I.