This section is dedicated to tools useful for the analysis and identification of precious stones. Each tool is designed to observe and measure the optical and physical characteristics of gems, facilitating accurate recognition in both professional and educational settings.
The Hanneman Gem Filter Set – Model 4000 is a set of gemological optical filters designed by Dr. William (Bill) Hanneman, Ph.D., an internationally renowned chemist and gemologist, for the practical and rapid identification of gemstones.
This Hanneman Gem Filter set contains five filters.