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
GEMS Chrome & Black Hexagon Triplet 10x Loupe with Rubber Grip
Bigger is better for Lightbox lab-created diamonds - Jeweller
21 Mm Illuminated Magnifying Jewelers Loupe 10x With Two Lights
Mini 60X Magnifier Microscope UV Jeweler Loupe currency Detector
Triplet 10X Jeweler's Magnifying Loupe - Hero Bullion
GEMS Chrome & Black Hexagon Triplet 10x Loupe with Rubber Grip
4 Pcs 40x Metal Jewelers Loupe Magnifier with Light
10x-20x LED Lighted High Diopter Close focus 10x,15x,20x, Eyeglass
Eliminate reflections on stone with a black anodized frame. Includes exclusive GIA lanyard and leather case. With 18mm fully corrected triplet lens.
Hand Loupe 10x - 18 mm and GIA Lanyard
Jewelers Loupe 18mm Triplet 20x - Mama's Minerals
Harald Schneider® L1 20 mm 10x Diamond Loupe
Jeweler 10x Loupe, for Meteorites and Gems - Galactic Stone