1:6.7 zoom optical system, 0.67X-4.5X zoom lens ♦Gerryllano optical imaging systems and special jewelry tested microscope stand. Fully meet the appraisal needs of all kinds of diamonds, crystals, gems and other jewelries. ♦Using 1:6.7 zoom optical system, 0.67X-4.5X zoom lens, magnification setting meet the jewelry appearance observation and the internal fine identification needs. Excellent optical system provides more clear, high contrast, high resolution images. Also a better depth of field made the final image has a 3D effect. ♦Multi-function stand design, professional jewelry microscope stand, with base rotating, adjustable observation angle, body lifting and other functions. According to different operating habits and samples can be adjusted freely. ♦Varieties of illumination and imaging methods, there are fluorescent and halogen illuminator. Can achieve parallel light, oblique light transmitted light and other methods. Can fulfill bright field, dark field and polarized observation, to analyze the composition and properties of Jewelry.