lapidarist
/ˌlæpɪˈdɛrɪst/Definitions
1. noun
A person who cuts, polishes, or works with gems or precious stones.
“She was a skilled lapidarist who created beautiful pieces of jewelry.”
2. noun
A person who operates a lapidary, a workshop for cutting and polishing gems or precious stones.
“The lapidarist in the store was able to restore the customer’s damaged engagement ring.”