Presidium Multi-Tester III Bestseller High-intensity UV lamp (366 nm

High-intensity UV lamp (366 nm Blacklight Blue) for gemstone fluorescence testing

The first gems were curiosities appreciated for their beauty and their unusual form

jewelry workshops

when Brazil displaced India as the world’s primary diamond supplier

The History of Diamond Production and the Diamond Trade (London: Barrie & Jenkins

Presidium Multi-Tester III Bestseller High-intensity UV lamp (366 nmThe Presidium Multi Tester III is the only instrument needed to verify the authenticity of diamonds against moissanites, cubic zirconia, and other diamond simulants. Showcasing a new ergonomic design with a rubberized anti slip grip, PMuT III promises greater ease of handling during testing. Presidiums Multi Tester is the worlds first tester that tests for both diamonds and moissanites in a single instrument. Its measuring probes and electronics