Presidium

Presidium is a brand known for its advanced gem testing and measurement instruments used in the jewelry and gemstone industry. The company specializes in producing high-quality, precise, and reliable devices for gemstone identification, grading, and authentication.

1. **Diamond and Gemstone Testers**: Presidium is renowned for its diamond testers and gemstone testers. These devices use advanced technology, such as thermal conductivity and refractive index measurements, to distinguish between diamonds and various types of gemstones.

2. **Electronic Scales**: Presidium offers electronic scales with high accuracy and precision, which are essential for weighing gemstones and precious metals in jewelry manufacturing and appraisal.

3. **Diamond and Moissanite Testers**: The brand provides specific testers to differentiate between diamonds and moissanite, a diamond simulant, ensuring accurate identification.

4. **Colored Gemstone Testers**: Presidium offers testers specifically designed for colored gemstones, helping to identify and separate various gemstone types based on their unique properties.

5. **Ultrasonic Cleaners**: Presidium's ultrasonic cleaners are designed to clean and remove dirt and debris from jewelry and gemstones safely and efficiently.

6. **Calibrated Gemstone Masters**: The brand also produces calibrated gemstone masters, which are reference stones used for comparison and calibration in gemological measurements.

Presidium's gem testing instruments are trusted by professionals in the jewelry industry, including gemologists, jewelers, appraisers, and gemstone traders, for their accuracy and reliability. The brand's dedication to producing high-quality instruments has earned it a respected position in the gemological community, and its products play a crucial role in ensuring the authenticity and quality of gemstones and jewelry.