This is a standard jeweler's loupe with a stated magnification of 10x. Optical quality is good, but I think 10x is optimistic. It produces a good
4 Pcs 40x Metal Jewelers Loupe Magnifier with Light
Gem-A 10x LED Loupe - Gem-A Instruments
GEMS Black 10x Hexagon Triplet Loupe
MAGNIFICATION: 20x Power magnification, LED and UV Lights, 21mm lens diameter The body is made of metal aluminum and a black frame. BLACK in color with a protective case, cleaning cloth and lanyard cord. A ready-to-go kit set designed for both hobbyists and professionals.
10x 21mm Loupe Jeweler Magnifier LED UV Light Triplet Lens Magnifying Gem Optical Tool Achromatic Aplanatic Foldaway Pocket Black Frame for Inspectin
Jewelers Loupe 21mm Triplet 10X - Mama's Minerals
GEMS 10X Hastings Triplet Diamond Estimator Scale Loupe with
10X Loupe for Gemologists and Jewelers - International Gem Society
MAXIMIZE Corrective Jeweler's Loupe (MG-11810-86). Featuring a 10X magnification, this loupe comes equipped with an approximately 3/4 (1.9 cm) lens
10x Jewelers Loupe Folding Magnifier Tool 18mm Lens
Best Cut Gems - Black Triplet 10X Hexagon Loupe 28
Glass Gemstone: Properties, Meanings, Value & More
KAYA® 10X Jeweler's Loupe – SEP Tools
Bigger is better for Lightbox lab-created diamonds - Jeweller