Emeralds Appraisal for Resale

I need a professional appraisal for a collection of emeralds. These gems belonged to my grandfather, a passionate rock hound, and I intend to sell them.

Requirements:
- Appraise a variety of emeralds
- Determine accurate resale value
- No documentation or certificates available

Ideal Skills and Experience:
- Expertise in emerald appraisal
- Experience in determining resale values
- No need for prior certification documentation