NEW Powerful 30X-21mm Jewelers Loupe Lupe Loop Diamond Gold Coins Stamps Watches This is a VERY POWERFUL 30X Power optical glass loupe Chromed metal body with 100% glass lens (No Plastic) It comes equipped with a small loop to attach a neck chain (Not Included) or key chain (Not Included) to secure to your neck It comes with its own ultra hard plastic black felt lined storage case to protect the optics This IMPRESSIVE 30X Power loupe has a focal distance of 1" (26mm) with 21mm 100% Glass Optical diameter lens size Loupe dimensions: 38 x 26 x 18 mm; Len's diameter: 21mm; Magnification: 30x Good for identifying small marks on jewelry, watch making industry, diamonds, gold, silver and its perfect for inspecting those tiny objects etc Foldable and compact, great to have one in your pocket all the time