New Delhi: Diamond is one of the most wanted mining products ever. There are few diamonds which any person on this earth would wish to be owner of , they are the most expensive diamonds
4. The Hope Diamond
The diamond looks blue in color to the naked eye because the number of traces of boron in the crystal structure but It shine a red phosphor under ultraviolet light.It is 45.52 carats (9.10 grams) large diamond.