Back to ICA Online Directory
Naturalis Biodiversity Center/Netherlands Gemmological Laboratory
Associate Member
Business Categories
Hanco Zwaan
head Netherlands Gem Lab
Naturalis Biodiversity Center/Netherlands Gemmological Laboratory
Contact information may be available to logged in members.
Professional Bio
Gemstone, Pearls, ID Reports, Diamond Grading Reports, Practical Gemology Classes, & ATC Gem-A.
Company/Business

Business Categories
Gemological Laboratory