I'm not sure about expert (most likely just called a professor) but somebody who studies gems is a gemmologist. A mineralogist is linked
a person that studies gems is called a gemologist.
A scientist who studies gems such as rubies and diamonds is called a gemologist. They are experts in identifying and evaluating the quality and characteristics of gemstones.
A gemologist studies gems.
mycologist as in : "mycologists have more fungi"
Depends on what sort of gems they are, how they are cut, if they have inclusions and if they are natural or treated. Get they valued or do the research.
a person that studies gems is called a gemologist.
When describing them, you could call them precious gems or gemstones.
A gem collector
Expert, Knowledgeable, etc..
The name for a gem expert is a gemologist. They are experts in natural and artificial gems.
You could call them "rocks" or "sparklers."
pullicologist
An expert at table talk is called a deipnosophist.
Horologist
A mathematician.
Horologist
Horologist