PRESIDIUM Manuals & User Guides

User manuals, setup guides, troubleshooting help, and repair information for PRESIDIUM products.

Tip: include the full model number printed on your PRESIDIUM label for the best match.

PRESIDIUM manuals

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PRESIDIUM OTI All in One Diamond Tester User Guide

20 juny 2024

PRESIDIUM OTI All in One Diamond Tester IMPORTANT INFORMATION OTi is intended to be used on polished colorless gemstones that are proportionately cut with a minimum table width of 1.6mm x 1.6mm from Color Grade of D to J only.…

Brand: PRESIDIUM

Presidium Gem Tester II (PGT II) Instruction Manual

PGT-II • January 15, 2026 • Amazon

Comprehensive instruction manual for the Presidium Gem Tester II (PGT II) with Assisted Thermal Calibration (ATC), designed for identifying diamonds, moissanites, and common colored gemstones based on thermal conductivity.

Brand: PRESIDIUM

Presidium Instruments Gem Indicator (PGI) Handheld Tester User Manual

PGI • October 31, 2025 • Amazon

Official user manual for the Presidium Instruments Gem Indicator (PGI) handheld tester, providing instructions for setup, operation, maintenance, and troubleshooting for identifying diamonds and colored gemstones.

Brand: Presidium