Amazon.com: BelOMO Jewelers Loupe Magnifier - 10x Triplet 21mm (.85"). Optical Glass with Anti-Reflection Coating for a Bright, Clear and Color Correct View. Foldable Loupe for Gems, Jewelry, Coins and Trichomes :
Amazon.com: 10x Foldable Pocket Magnifier Loupe with UV and LED Light for Jewelry, Rocks, Coins, and Antiques - Illuminated Magnifying Tool for Eye, Stamps, Watches, Hobbies, and Gems : Arts, Crafts &