It means something or someone is unpolished but has potential. For example, a child with obvious talent or an entry-level employee who shows potential might be referred to as "diamond in the rough".
According to Wikipedia, the DeBeers slogan..."A young copywriter, Frances Gerety, coined the famous advertising line "A Diamond is Forever" in 1947, allegedly while she was dreaming."The line may...
The notation ctw indicates that the carat total weight is...in this case 1.50 carats. The notation also means that the total weight is made up of a combined number of diamonds, and not the weight of...
well for instance add - 5+3+3+5=16 well u divide the 16 by how many u added which is 4 that u added ...so 4 is also your answer because that is how many the 4 (mean) go into the 16