Crossword Clue:

GEMOLOGIST one who studies gems

AnswerCrossword Clue
PEARLDIVEROne who brings up gems from the sea
OCULISTOne who studies irises
PALEONTOLOGISTOne who studies fossils
MYRMECOLOGISTOne who studies ants
CPAOne who studies books
ROENTGENOLOGISTOne who studies X-rays
MICROBIOLOGISTOne who studies minute organisms
YOGIOne who studies asanas and pranayama