The BelOMO Triplet Jewelers Loupe has a large size .85" (21mm) and large viewing area .67" (17mm), much larger than the Bausch & Lomb Hastings Triplet Magnifier.

The BelOMO 10x Triplet Loupe Magnifier is an extremely high-quality achromatic magnifying lens manufactured by the Belarusian Optical Mechanical Association (BelOMO). The BelOMO 10x is the favorite and most frequently recommended 10x power loupe of geologists, rockhounds, gemologists, macro photographers, numismatists, entomologists, and philatelists around the world.

The large 21mm (.85") 3 elements lens making up this achromatic triplet gathers lots of light to provide a bright, clear, and color correct view. The 10x power magnification provides the best magnification to depth of field ratio and is the most popular power for a handheld magnifier.

BelOMO Triplet 10x magnifying loupe has three achromatic, color correction, anti-reflection lenses that make it possible to see the image as precise and clear as in the original. Due to the presence of three lenses the BelOMO loop is called a triplet.

BelOMO Jewelers loupes are assembled using screws rather than rivets which allows them to be adjusted but look for a merchant that treats the screws against working loose.

The housing and cover have a matte black finish for gem grading. Belarusian Optical and Mechanical Association (BelOMA / BelOMO), makers of telescopes, camera lenses, and other optical components manufactures these loupes.

The BelOMO loupe is a FANTASTIC buy. These are optical quality lenses, each one inspected and certified just like a camera lens, that stand on their own against the higher pried competition.

Don't be fooled by cheap loupes selling for nearly the same prie of MORE! Many don't even say the manufacturer. WhyBecause they're cheap imports from China, Japan, Taiwan which typically cost less than a dollar at import. If you don't know the manufacturer how can you know the quality

Triplet means three lenses made of different types of optical glass bonded together and designed that, together, they straighten out the light that comes into the front of the loupe lens so that it's the same when it leaves. Cheap import triplets are just three identical pieces of glass (actually plastic), not bonded, or even a single piece of glass that distort the image and don't provide the stated magnification.