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Presidium is a brand that specializes in manufacturing diamond testing, colored gemstone testing, and measurement equipment.
Presidium was started in 1979 in Singapore.
The brand's first product was a handheld diamond tester.
In 1990, Presidium moved its headquarters to Hong Kong.
Presidium received the prestigious ISO 9001 certification in 1996.
Today, Presidium has a global presence, with distributors in more than 70 countries.
GemOro is a brand that produces diamond and gem testing equipment.
GIA is a nonprofit organization that specializes in diamond grading and gemological research.
Sarine is a technology company that develops and manufactures equipment for the diamond industry.
A handheld device that tests the authenticity of diamonds.
A device that differentiates between diamonds and moissanite, a diamond simulant.
A device that tests the authenticity of colored gemstones.
A diamond tester is a device that tests whether a diamond is real or fake. It works by measuring the thermal conductivity of the stone.
Presidium diamond testers are highly accurate, with a margin of error of less than 0.02%.
A moissanite tester is a device that differentiates between diamonds and moissanite, a diamond simulant. This is helpful because moissanite is often used as a cheaper alternative to diamonds.
No, a Presidium gemstone tester can only test whether a stone is a natural gemstone or a simulant. It cannot differentiate between different types of gemstones.
Presidium diamond testers are sold by a variety of jewelry supply retailers online, as well as on Amazon and eBay.
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