Valuer
/ˈvæljuːər/
Definition 1 of 1
Pro Tip 1/3Professional Expert
A valuer is a trained professional with expertise in estimating value, often requiring certification. 
The valuer provided an expert opinion on the diamond's worth.
Pro Tip 2/3Context Specific
Valuers specialize in different fields; context indicates the item they're appraising. 
A property valuer might not assess the worth of jewelry.
Pro Tip 3/3Objective Assessment
A valuer's job is to provide an unbiased estimation, without personal feelings influencing value. 
The valuer objectively evaluated both the age and condition of the antique.