Description :

The Presidium Gem Tester / Color Stone Estimator
provides a quick, easy, laboratory proven way to identify diamond and separate the most popular colored gem stones from one another. This valuable tool can eliminate human error when identifying precious gems. The Presidium Gem Testers accurate performance is based on the fact that different gem stones conduct heat at different rates. Simply touched the Gem Testers sophisticated thermoelectric probe to ther surface of any mounted or loose stone and the specially calibrated dial will show you the relative heat conductivity of the material.

The Presidium Gem Tester / Color Stone Estimator
Is made under rigid quality standards. It is easy to operate and convenient to own. The light weight portable unit is powered by two (2) AA 1.5 V batteries or the AC adapter provided. Calibration is made easy with the two test discs mounted into the frame. The solid state probe pen requires no warm up time between tests and includes a built-in metal detector which will alert you if you have accidentally touched the mounting instead of the stone.

1 year factory warranty

Description :

Industry Proven Thermal Testing
The battery powered DIAMOND FACT uses thermal conductivity to distinguish diamond from its many simulants. Simply touch the tips of the probe pen to any mounted or loose stone. If the analog dial reaches the green zone, the stone is diamond, if it remains in the red zone the stone is a simulant. Stones as small as 0.02 carat can be accurately tested.

Heat conductivity of diamond and some of its simulants
The graph illustrates typical experimental observations of heat conductivity measured in millivolts against time after the probe makes contact with different stones of similar size.

Fail-safe Protection
The unit includes a built-in diamond and simulant test discs for easy calibration. The units probe pen comes with a Metal Alert Buzzer to let the user know if a metal mounting has been touched.

*Note: In the USA and Canada, the PRESIDIUM DIAMOND FACT is sold by GIA
Gem under the trademark GEM Mini-DiamondMaster.

1 year factory warranty

Description :

Portable Diamond Testing with THERMAL CONDUCTIVITY and REFLECTIVITY measuring in the same Affordable instrument!! Double the confidence in testing for diamonds against all known simulants, including Synthetic Moissanite!!

Identify Diamonds & Colored Stones!

The PRESIDIUM DUOTESTER is the only tool on the market that provides the user with two proven tests for diamonds and the ability to differentiate between similarly colored gemstones. The easy-to-read dial of the DUOTESTER is calibrated to indicate the differences in thermal conductivity of the most popular gemstones and simulants. Simply touch the tip of the thermal conductivity probe pen to a mounted or loose stone. Diamond is easily identified by any reading in the green area of the dial, and colored gemstones can be easily differentiated from one another by the clearly labeled zones provided in the red area. Even coated gemstones can be accurately tested.

DIGITAL REFLECTIVITY MEASUREMENT
Diamond and its simulants reflect light proportionally to their respective refractive index. The PRESIDIUM DUOTESTER provides the user with a digital reflectivity meter and an easy to use Simulant Reflectivity Chart. The reflectivity number from the meter is simply cross-referenced with the chart to identify the stone. An unknown gemstone can be tested for its thermal conductivity and, if necessary, the results can be confirmed with a quick and simple reflectivity test. All stones indicated as diamond by the thermal tester should be tested with the reflectivity meter to test for Synthetic Moissanite, thus providing double the assurance for the same price.

Easy Fail Safe Calibration
The PRESIDIUM DUOTESTER comes complete with built in diamond and simulant test discs for easy calibration of the thermal tester. Calibration of the Reflectivity Meter is made easy with the optional, built in diamond substitute set.

Convenience
The thermal probe pen includes a metal warning detector that emits a audible buzz if the gem mounting is accidentally touched. The DOUTESTER can be powered by 5 AA alkaline batteries or by the electrical adapter provided.

Guaranteed Quality
The PRESIDIUM DUOTESTER is manufactured under rigid quality standards. The user is assured of the highest satisfaction and dependable service from this PRESIDIUM instrument. Each DUOTESTER is tested for functionality before shipment.

1 year factory warranty

Description :

• One-touch immediate simultaneous test.
• Audible beep and visual lights indicating and separating diamond from moissanite.
• Retractable spring-loaded durable XL tip.
• Superior Surface Mount Technology (SMT)
• Exclusive metal warning buzzer.
• Portable Alkaline Battery Powered.
• Unprecedented Lifetime Limited Warranty
• Made in the U.S.A.

Description :

• Unprecedented Lifetime Limited Warranty
• Next generation XL digital electronics
• Fast warm-up time
• Durable spring loaded XL tip
• Optional 220v AC powered model (except XL)
• Exclusive metal warning buzzer
• Superior Surface Mount Technology (SMT)
• Audible & Visual Diamond Indicator
• Battery saving auto shut of (except Reliance AC)
• Protective carrying case included (except Reliance, Reliance AC & Diamond Probe II)
• Made in the U.S.A.

Rechargable ni-cad battery powered.  Adaptor/charger included.  Ship Wt. 2 lbs.

User-replaceable alkaline battery powered only.  Ship Wt. 2 lbs.

AC Powered only.  Build-in AC adaptor.  Diamond/Stimulant test plates and loose stone holder included.  Ship Wt. 2 lbs.

Description :

Thermal testers alone no longer fully protect you from moissnite and synthethic diamonds because they will test as the real thing. The Secure II features a sophisticated patented computer microchip that monitors all critical test parameters, insuring the consistent accuracy of the unity.

Features:

• Audible beep and visual yellow light indicating synthetic moissanite or synthetic diamond
• Retractable spring-loaded durable tip
• Immediate recovery - no waiting between tests
• Superior surface mount technology (SMT)
• New custom alligator clip with ""soft touch"" jaws
• Loose stone holder secured in built-in storage compartment
• Sophisticated metal warning buzzer that will not alarm on low resistance moissanite
• Unprecedented life time limited warranty
• Made in USA

Description :

FEATURES:

• Unprecedented Lifetime Limited Warranty
• AC powered only. 4 second warm-up.
• New state-of-the-art, spring loaded, durable RELIANCE tip
• The Reliance features increased portability with user-replaceable standard alkaline batteries
• The Reliance AC features increased affordability by giving you what you need-A/C plug-in operation only
• The Reliance AC features a compartment with Diamond/ Simulant Test Plates and a Loose Stone Holder
• Industry's fastest warm-up time: 10 secs
• Exclusive metal warning buzzer
• Battery saving auto shut-off function
• Audible & visual indicator genuine diamond
• The latest in surface mount component technology
• Included A/C adapter/charger with CZeckpoint, optional A/C adapter for Reliance
• Handsome carrying case (except Reliance AC)
• Made in the U.S.A.

When you need the best and most reliable diamond tester, your decision is easy, Ceres!

Diamond/Simulant test plates and loose stone holder included. The CZeckpoint and Reliance models share the most advanced diamond tester technology on the market. In fact, Ceres invented and owns the patented technology of thermal conductivity, licensed and utilized by every diamond tester manufacturer. But what makes ours the best are their superior electronics and design. Now, we have combined the trusted reliability that has become the industry standard, with even more features.

Description :

This state-of-the-art tester is simple but precise, giving the user a quick "true/false" reading. Housed in a high impact plastic case, it is everything one needs to test diamonds in rapid succession, whether mounted or unmounted. Features include:

• Metal alert (a long beep if metal is touched rather than stone).
• Large/small switch for testing diamonds over and under eight points.
• Green diamond indicator light illuminates if the stone is a diamond.
• Seven second warm-up time with a 150 second shut-off alarm.
• If the stone is a simulant nothing happens.
• Three year warranty except for the battery and tip damage.
• Low battery indicator; nine volt battery included.

Description :

EURO TOOL offers the Prestige Series II Diamond Tester with state-of-the-art technology assuring quick, accurate readings to determine if a stone is a real diamond or a fake. Features include:

• Automatic and manual mode.
• Linear display for increase information.
• Adjustable gain for small stone sizes.
• Compensation for ambient temperature.
• Fast warm up time - ten seconds!
• Portable with one nine volt battery (included).
• Auto shut-off with a push button switch.
• Unique new anti-fade circuit which compensates for stone heating.
• Low battery indicator for accurate readings.
• Multipurpose alarms:
  • Beeps when ready.
  • Metal alert.
  • Beeps repeatedly when testing a diamond.