Gem Identification
GEM240
| Gem Identification
Related
diploma program(s): G.G.,
Graduate Colored
Stones
Prerequisite:
GEM120,
GEM220
Discover
how to deal with the major categories of gem separations. Learn how
to identify more than 60 species of gemstones, separate natural gems
from synthetics, and detect treated gems. Develop your skills by practicing
testing procedures and techniques on sets of practice stones provided
by GIA. Learn about the tools of the trade and how each tool helps reveal
the gem properties essential to identification. Find out about the latest
treated gemstones in the market today. Discover how illumination techniques
can facilitate the identification process. Find out how – and
when – to use gemological laboratory services. Learn how to use
gem identification skills to protect your business from costly mistakes.
To
complete the Gem Identification course (GEM240), you must have access
to gem tweezers, a 10x loupe or microscope, refractometer with polarizing
filter, optic figure sphere, dichroscope, polariscope, and spectroscope.
These instruments are not included with the course materials. Or, you
can complete your assignments using these professional tools in GIA’s
Student Workroom. For complete Student Workroom activities, hours, and
fees, please click here.
What
do I earn?
Gem
Identification Certificate
How
can I take it?
At home.
Distance Education
only
How
long will it take?
Between 8 months (typical) and 24 months (maximum time allowed)

