The standard tool used by most jewellers world-wide is now a 10x hand held "loupe" (French for magnifying glass).
(The standard tool; used; by most jewellers world-wide) (The standard tool used by most jewellers world-wide; is; T:now; a 10x hand held "loupe" (French for magnifying glass)
The standard tool The standard tool used by most jewellers world-wide
used is
by most jewellers world-wide
T:now a 10x hand held "loupe" (French for magnifying glass