Learn to Use a Diamond Tester and Chelsea Filter (Video)
Some very helpful gemology tools are easy to use. Learn about the Chelsea filter, diamond tester, and other simple instruments in this video.
There are many gemology tools available. Some, like the refractometer and spectroscope, are mainstays of gemological testing that require a lot of practice to master. However, there are other instruments that are very easy to use that can also help you identify gems. This video will show you how to use the Chelsea filter, diamond tester, and other tools.
Interested in this topic?
This article is also a part of our Gemology Tools Mini Course, in the unit Measuring Optical Properties.
Premium Content - Membership Required - Learn More
Kyrylo Gubariev, Graduate Gemologist (GG, AJP)
Kyrylo Gubariev, Graduate Gemologist (GG, AJP) is a gemologist with a passion for sharing his knowledge with fellow gem lovers. Originally from Ukraine, he is currently based in Bangkok, Thailand.
Addison Rice
A geologist, environmental engineer and Caltech graduate, Addison's interest in the mesmerizing and beautiful results of earth's geological processes began in her elementary school's environmental club. When she isn't writing about gems and minerals, Addison spends winters studying ancient climates in Iceland and summers hiking the Colorado Rockies.
Related Articles
Amateur Gemstone Faceting Volume 1: Book Review
Refractometer Guide, Part 3: Determining Optic Character and Recognizing Optic Effects
10X Loupe for Gemologists and Jewelers
The Spectroscope
Never Stop Learning
When you join the IGS community, you get trusted diamond & gemstone information when you need it.
Get Gemology Insights
Get started with the International Gem Society’s free guide to gemstone identification. Join our weekly newsletter & get a free copy of the Gem ID Checklist!