Colors Gemstone Tester PRESIDIUM Gem indicator PGI

Presidium Gem Indicator (PGI), Gem Tester

Colors Gemstone Tester PRESIDIUM Gem indicator PGI

Micrometer from 0 to 10 MM watch

Presidium Gem Indicator (PGI)

Presidium Instruments - The only handheld digital tester in the industry specifically for colored gemstones, and tests for 31 types of gemstones. The Presidium Gem Indicator, the only handheld tester in the

Colored stones Tester

Micrometer from 0 to 10 MM watch

Presidium Instruments Gem Indicator (PGI) Handheld Tester for Identifying Diamonds and Common Colored Gemstones : Arts, Crafts & Sewing

PRESIDIUM GEM INDICATOR PGI GEM TESTER USB