Loose diamond that has specific cut and polished is valued as an expensive gem. A Diamond is forever and is the world’s most precious and perfect substance. It is a very hard crystalline, finely faceted to constantly reflect and refract light. It is very highly priced because it is difficult to manually produce a faceted diamond. A diamond’s brilliancy depends on the cut given to it, thereby showing off the number of facets it has. It is said that diamonds are a girl’s best friend and is the birthstone for people born in April.