Could these be plated with 18k gold?

#1
Hi, I have a small pair of emerald earrings, 14k yellow gold. The person I'm getting them for has sensitive skin, and often reacts with anything less than 18k gold. They are about the size of a pea.

Do you think a jeweler would be able to coat them in 18k, if so, about how much should I expect to pay?

Thanks
 
Top