Compact and portable. Clear lens, Foldable design. Uses white light sources such as and incandescent lamps. Discover gemstone pleochroism with ease! This foldaway dichroscope is perfect for observing color variations in birefringent gemstones. Simply illuminate your sample with white light, maintain a 2-5 cm viewing distance, and rotate for a full 360° observation. Unveil the beauty of true dichroism in no time! 2-5cm distance between the dichroscope and the gemstone during the inspection, moving 360° can observe the trichroism from multiple directions., Weight: 0.08157103694 pounds, Manufacturer: Quzenn