AmScope 20x 30x 40x 60x Gem Jewelry Darkfield Stereo Microscope Three Magnification Power Settings: 20X, 30X, 40X & 60X Built-In Both Incident (top) Lighting and Transmitted (bottom) Lighting Sharp Stereo Erect Images over a Wide Field View Darkfield condenser and jewelry/gem clamp included Perfect for Examination of Jewels, Gemstones, Diamonds, and Virtually any 3-D Objects