raw
A rough and unpolished surface is called "unrefined" or "coarse."
rough, unpolished: raw, unrefined, imperfect, unfinished, incomplete
Rough and unpolished describes something that has not been smoothed or refined, usually having a coarse or uneven texture. This term is commonly used to describe surfaces that are irregular, unfinished, or lacking in polish or shine.
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"."In the rough" is a diamond that is as found, unpolished or uncut, still in rough form--this is not always even recognized as valuable, since it is not obvious in its rough form as a beautiful stone.
Coarse
interference
A rough diamond is a term often used to describe a person who is worthy but unpolished. Just like a rough diamond has potential to be valuable once cut and polished, this person has potential for greatness with some refinement and guidance.
Well, would you care to have a rough, unpolished knife in your kitchen.
When light is reflected from a rough or unpolished surface, it is scattered in various directions due to the uneven surface. This diffused reflection causes the light to be reflected in an irregular manner, resulting in a lack of a clear or focused image.
Depends on what stones you are looking for. This web site is solely for rough rubies www.rubyforfree.com
rough, crude, unfinished, impure, unrefined, unprocessed, unpolished, vulgar, rude, indecent, improper, smutty, ribald, indelicate
The opposite of shiny is matte or dull.