The Synthetic Diamond Screener II is developed by Presidium to help screen out Type IIa colorless diamond, which is likely to be laboratory-grown and created through chemical vapor deposition (CVD) or high-pressure high temperature (HPHT) syntheses, from the natural Type Ia colorless diamond.

When subjected to this deep UV irradiation, Type Ia and Type IIa diamonds each absorb different amount of UV light. Type IIa diamonds allow deeper UV light to pass through and thus its UV light absorption ability is low. This difference in light absorption is significant enough to aid in differentiating between colorless Type Ia and Type IIa diamonds.

Features

• Advanced technology that measures a diamond’s UV light transmittance ability
• 2 color-coded (blue/red) indicator light bars to give a low or high reading of UV light absorption with blue light indicating Natural Diamond and a red light indicating Type IIa Diamond
• Instantaneous clear results within 2 seconds
• Blue light to illuminate the testing pad
• A 5mm metal bar to conveniently raise the test probe for successive testing on loose stones
• Test button will blink in red to alert if the device is unable to detect any stones on the photo-detector
• Auto shutdown of interior LED light source for safe testing when lid of device is open or when Start Test button is not activated
• A USB port for alternative power source and connectivity
• Exterior base foam padding to ensure non-slip sturdiness and prevent scratches to surfaces
• Low battery indicator
• Energy-saving auto power-off of the device after 10 minutes without operation

Benefits

• Help to screen out Type IIa diamonds likely to be laboratory-grown diamonds
• Tests on diamonds within a range in dimension from 1.5 mm in width and up to 5 mm in height (approx. 0.02 to 10 carat size)
• Tests on polished diamonds of popular cuts such as brilliant round cut, emerald cut, baguette cut, etc
• Can be used on both loose and mounted diamonds (on jewellery with open-back setting)
• For use on colorless diamonds from D Color down to J Color

Power & Battery

• 4 x AAA alkaline batteries
• USB port to be used with a USB cable and appropriate Presidium Universal USB Power Adaptor

Recommended Operating Conditions

• Only for Colorless Diamonds of:
• Color Grade: D Color to J Color
• Carat Size: 0.02 carat to >10 carats
• Cut: For all cuts as long as a gemstone has a flat surface
• Mounted Jewelry: For jewelry with “open-back” setting

Gem True Veritas Diamond CVD & Moissanite Tester is the only machine available that tests for Diamond, CVD/HPHT, and Moissanite. This GemTrue Veritas CVD Diamond tester features an easy to use and straightforward design. Thanks to its compact body, you can easily carry it along no matter where you’re headed. The Veritas CVD Diamond tester is powered by four regular AAA batteries. Additionally, it comes with a micro-USB input that allows you to charge it through your laptop, PC, or power bank. With its low battery warning and automatic shut off feature, this CVD diamond tester lets you take the most out of its battery life. The GemTrue Veritas CVD Diamond Tester features automatic calibration each time the tester is switched on. Thanks to this, you can enjoy perfect accuracy over and over again. This little beauty is easy to use which makes it perfect for beginning jewelers and professionals alike. As always, we have used the latest technology and hardware to make sure our tester is nothing but perfect. Our skilled team of engineers has put an enormous amount of time and effort into the research and development of the Veritas CVD Diamond tester and we are fully confident that it will meet all your expectations and demands. In fact, we are so confident of its capabilities and quality that we offer a lifetime guarantee on the whole product.  The Veritas CVD Diamond Tester is the newest tester from Gemtrue. This unique device is the only tester on the market that is capable of distinguishing between natural Diamond, CVD/HPHT, and Moissanite. If you’re looking for a pocket-sized CVD diamond tester that has it all, the GemTrue Veritas is the perfect gadget for you. This superior tester has been designed and manufactured in-house by our British engineers to ensure it meets the highest industry standards. With this beautiful gizmo at your side, distinguishing diamond, CVD-HPHT, and Moissanite has never been easier.

Diamond Color Grading Set, Available in one-carat size, a set of 10 stones (color range from D-M). Comes with an attractive case. The unique grading display/container is made of color grading-approved white acrylic & is equipped with a built-in grading tray. All stones are laser-inscribed with Color Letters for easy identification and handling. These CZ stones are made with Nano Technology in Japan with the highest standards of production. These stones have a 10-year warranty for the color. 

A simple yet very powerful tool for all diamond and gemstone merchants. Very easily sieve your round calibrated stones to perfect sizes using these Sieves. Available in 3 diameters 80mm, 66mm, and 47mm. They come with 42 plates and sizes ranging from 0.5mm to 4.5mm. Made from high-grade Stainless Steel and carefully cut from machines for precision holes. A must for every diamond trader. Also available is a special size 80mm with 75 plates for more intermediate sizes.

The Presidium Diamond Mate Tester (PDMT) has a retractable probe tip that ensures consistent pressure against the gemstone during testing for more reliable results. With the industry’s thinnest probe tip size of 0.6mm, PDMT tests diamonds as small as 0.02ct. Test results are instantly indicated by an LED light and continuous audible beep.

Features

• Retractable thermoelectric probe tip for enhanced accuracy that ensures constant pressure between probe and gemstone
• Industry’s thinnest probe tip (0.6mm) for testing diamonds as small as 0.02ct
• Metal alert buzzer to ensure that probe tip is in contact with stone during testing
• No waiting time between tests
• Clear and easy-to-read LED display
• Rechargeable batteries
• Low battery indicator
• Low battery consumption

Benefits

• Verifies authenticity of diamonds instantly
• Tests both polished and unpolished gemstones
• Tests diamonds as small as 0.02ct
• Consistent and reliable results every time
• No waiting time between tests
• Clear and visible display for ease of reading measurements
• Simple and easy to use
• Light and portable for convenience
• Comes with protective carrying case

Power & Battery

• 3 x AAA alkaline batteries (approximately 7 hours of continuous use)

The Presidium Multi Tester III (PMuT III) is the all-in-one instrument that reliably and accurately verifies the authenticity of colorless diamonds against moissanite and other diamond simulants such as colorless sapphire, colorless spinel, cubic zirconia, zircon, etc. Showcasing a new ergonomic design with a rubberized anti-slip grip and an all-around display for easy readability, PMuT III promises greater ease of handling and reading of results whilst testing.

Presidium’s Multi Tester was the world’s first tester that tests for both colorless diamonds and moissanite in a single instrument. Its measuring probes and electronics circuitry detect data from the gemstone being tested via a customized micro-controller, identifying colorless diamonds and moissanite based on their thermal and electrical properties.

PMuT III has a retractable probe tip that ensures consistent pressure against the gemstone during testing for more reliable results. With the industry’s thinnest probe tip size of 0.6mm, the PMuT III tests colorless diamonds as small as 0.02ct.

Features

• Retractable thermoelectric probe tip that ensures constant pressure between probe and gemstone
• Industry’s thinnest probe tip (0.6mm) for testing gemstones as small as 0.02ct
• Metal alert buzzer to ensure that the probe tip is in contact with gemstone during testing
• Ergonomic design with rubberized anti-slip grip for better handling during testing
• 180-degree multi-viewing LED display
• Catered to both left-handed and right-handed users alike
• International voltage compatibility
• Low battery indicator
• Automatic power off

Benefits

• Identifies metals, simulants, moissanite, and colorless diamonds instantly
• Enhanced accuracy and consistency with improved functionality and usability
• Accurate testing on diamonds as small as 0.02ct
• Enhanced functionality and usability
• Clear and visible display for ease of reading measurements
• No waiting time between tests
• Simple and easy to use
• Light and portable for convenience
• Comes with protective carrying case

Power & Battery

• 3 x AAA alkaline batteries (approximately 7 hours of continuous use)
• AC port to be used with appropriate Presidium Power Adaptor (not included)

The LAPIS is the one and only rechargeable multi-tester you need to distinguish between diamond, moissanite, simulant, and metal. It features a unique ATC Solution (Ambient Temperature Compensation) which will make adjustments in accordance with the ambient temperature change to maintain its accuracy. This overcomes the shortcoming that many testers have, where the temperature of the stone affects the accuracy of the tester.

Features:

• Lightweight and comfortable grip size
• Rechargeable lithium battery
• Includes lanyard, metal stone rest and charging adapter
• 10 hours on continuous operation
• Retractable Tip Designed at an ergonomic testing angle
• Simple and Easy to operate
• Stone Type: Diamond, Moissanite, Simulant
• Testing Size 0.02 Carat
• ATC Solution accounts for a different temperature of the testing environment

The Synthetic Diamond Screener II is developed by Presidium to help screen out Type IIa colorless diamond, which is likely to be laboratory-grown and created through chemical vapor deposition (CVD) or high-pressure high temperature (HPHT) syntheses, from the natural Type Ia colorless diamond.

When subjected to this deep UV irradiation, Type Ia and Type IIa diamonds each absorb different amount of UV light. Type IIa diamonds allow deeper UV light to pass through and thus its UV light absorption ability is low. This difference in light absorption is significant enough to aid in differentiating between colorless Type Ia and Type IIa diamonds.

Features

• Advanced technology that measures a diamond’s UV light transmittance ability
• 2 color-coded (blue/red) indicator light bars to give a low or high reading of UV light absorption with blue light indicating Natural Diamond and a red light indicating Type IIa Diamond
• Instantaneous clear results within 2 seconds
• Blue light to illuminate the testing pad
• A 5mm metal bar to conveniently raise the test probe for successive testing on loose stones
• Test button will blink in red to alert if the device is unable to detect any stones on the photo-detector
• Auto shutdown of interior LED light source for safe testing when lid of device is open or when Start Test button is not activated
• A USB port for alternative power source and connectivity
• Exterior base foam padding to ensure non-slip sturdiness and prevent scratches to surfaces
• Low battery indicator
• Energy-saving auto power-off of the device after 10 minutes without operation

Benefits

• Help to screen out Type IIa diamonds likely to be laboratory-grown diamonds
• Tests on diamonds within a range in dimension from 1.5 mm in width and up to 5 mm in height (approx. 0.02 to 10 carat size)
• Tests on polished diamonds of popular cuts such as brilliant round cut, emerald cut, baguette cut, etc
• Can be used on both loose and mounted diamonds (on jewellery with open-back setting)
• For use on colorless diamonds from D Color down to J Color

Power & Battery

• 4 x AAA alkaline batteries
• USB port to be used with a USB cable and appropriate Presidium Universal USB Power Adaptor

Recommended Operating Conditions

• Only for Colorless Diamonds of:
• Color Grade: D Color to J Color
• Carat Size: 0.02 carat to >10 carats
• Cut: For all cuts as long as a gemstone has a flat surface
• Mounted Jewelry: For jewelry with “open-back” setting

Gem True Veritas Diamond CVD & Moissanite Tester is the only machine available that tests for Diamond, CVD/HPHT, and Moissanite. This GemTrue Veritas CVD Diamond tester features an easy to use and straightforward design. Thanks to its compact body, you can easily carry it along no matter where you’re headed. The Veritas CVD Diamond tester is powered by four regular AAA batteries. Additionally, it comes with a micro-USB input that allows you to charge it through your laptop, PC, or power bank. With its low battery warning and automatic shut off feature, this CVD diamond tester lets you take the most out of its battery life. The GemTrue Veritas CVD Diamond Tester features automatic calibration each time the tester is switched on. Thanks to this, you can enjoy perfect accuracy over and over again. This little beauty is easy to use which makes it perfect for beginning jewelers and professionals alike. As always, we have used the latest technology and hardware to make sure our tester is nothing but perfect. Our skilled team of engineers has put an enormous amount of time and effort into the research and development of the Veritas CVD Diamond tester and we are fully confident that it will meet all your expectations and demands. In fact, we are so confident of its capabilities and quality that we offer a lifetime guarantee on the whole product.  The Veritas CVD Diamond Tester is the newest tester from Gemtrue. This unique device is the only tester on the market that is capable of distinguishing between natural Diamond, CVD/HPHT, and Moissanite. If you’re looking for a pocket-sized CVD diamond tester that has it all, the GemTrue Veritas is the perfect gadget for you. This superior tester has been designed and manufactured in-house by our British engineers to ensure it meets the highest industry standards. With this beautiful gizmo at your side, distinguishing diamond, CVD-HPHT, and Moissanite has never been easier.

Diamond Color Grading Set, Available in one-carat size, a set of 10 stones (color range from D-M). Comes with an attractive case. The unique grading display/container is made of color grading-approved white acrylic & is equipped with a built-in grading tray. All stones are laser-inscribed with Color Letters for easy identification and handling. These CZ stones are made with Nano Technology in Japan with the highest standards of production. These stones have a 10-year warranty for the color. 

A simple yet very powerful tool for all diamond and gemstone merchants. Very easily sieve your round calibrated stones to perfect sizes using these Sieves. Available in 3 diameters 80mm, 66mm, and 47mm. They come with 42 plates and sizes ranging from 0.5mm to 4.5mm. Made from high-grade Stainless Steel and carefully cut from machines for precision holes. A must for every diamond trader. Also available is a special size 80mm with 75 plates for more intermediate sizes.

The Presidium Diamond Mate Tester (PDMT) has a retractable probe tip that ensures consistent pressure against the gemstone during testing for more reliable results. With the industry’s thinnest probe tip size of 0.6mm, PDMT tests diamonds as small as 0.02ct. Test results are instantly indicated by an LED light and continuous audible beep.

Features

• Retractable thermoelectric probe tip for enhanced accuracy that ensures constant pressure between probe and gemstone
• Industry’s thinnest probe tip (0.6mm) for testing diamonds as small as 0.02ct
• Metal alert buzzer to ensure that probe tip is in contact with stone during testing
• No waiting time between tests
• Clear and easy-to-read LED display
• Rechargeable batteries
• Low battery indicator
• Low battery consumption

Benefits

• Verifies authenticity of diamonds instantly
• Tests both polished and unpolished gemstones
• Tests diamonds as small as 0.02ct
• Consistent and reliable results every time
• No waiting time between tests
• Clear and visible display for ease of reading measurements
• Simple and easy to use
• Light and portable for convenience
• Comes with protective carrying case

Power & Battery

• 3 x AAA alkaline batteries (approximately 7 hours of continuous use)

The Presidium Multi Tester III (PMuT III) is the all-in-one instrument that reliably and accurately verifies the authenticity of colorless diamonds against moissanite and other diamond simulants such as colorless sapphire, colorless spinel, cubic zirconia, zircon, etc. Showcasing a new ergonomic design with a rubberized anti-slip grip and an all-around display for easy readability, PMuT III promises greater ease of handling and reading of results whilst testing.

Presidium’s Multi Tester was the world’s first tester that tests for both colorless diamonds and moissanite in a single instrument. Its measuring probes and electronics circuitry detect data from the gemstone being tested via a customized micro-controller, identifying colorless diamonds and moissanite based on their thermal and electrical properties.

PMuT III has a retractable probe tip that ensures consistent pressure against the gemstone during testing for more reliable results. With the industry’s thinnest probe tip size of 0.6mm, the PMuT III tests colorless diamonds as small as 0.02ct.

Features

• Retractable thermoelectric probe tip that ensures constant pressure between probe and gemstone
• Industry’s thinnest probe tip (0.6mm) for testing gemstones as small as 0.02ct
• Metal alert buzzer to ensure that the probe tip is in contact with gemstone during testing
• Ergonomic design with rubberized anti-slip grip for better handling during testing
• 180-degree multi-viewing LED display
• Catered to both left-handed and right-handed users alike
• International voltage compatibility
• Low battery indicator
• Automatic power off

Benefits

• Identifies metals, simulants, moissanite, and colorless diamonds instantly
• Enhanced accuracy and consistency with improved functionality and usability
• Accurate testing on diamonds as small as 0.02ct
• Enhanced functionality and usability
• Clear and visible display for ease of reading measurements
• No waiting time between tests
• Simple and easy to use
• Light and portable for convenience
• Comes with protective carrying case

Power & Battery

• 3 x AAA alkaline batteries (approximately 7 hours of continuous use)
• AC port to be used with appropriate Presidium Power Adaptor (not included)

The LAPIS is the one and only rechargeable multi-tester you need to distinguish between diamond, moissanite, simulant, and metal. It features a unique ATC Solution (Ambient Temperature Compensation) which will make adjustments in accordance with the ambient temperature change to maintain its accuracy. This overcomes the shortcoming that many testers have, where the temperature of the stone affects the accuracy of the tester.

Features:

• Lightweight and comfortable grip size
• Rechargeable lithium battery
• Includes lanyard, metal stone rest and charging adapter
• 10 hours on continuous operation
• Retractable Tip Designed at an ergonomic testing angle
• Simple and Easy to operate
• Stone Type: Diamond, Moissanite, Simulant
• Testing Size 0.02 Carat
• ATC Solution accounts for a different temperature of the testing environment