Geology/Rockhound 10X Mineral Lens

This 10X geology magnifying loupe comes with a large 23mm doublet lens assembly with a good working distance & aperture. Great for field work & easy viewing of plants, insects, rocks, minerals, coins & stamps, only $17.95

A 10X hand lens has a relatively small field of view due to the curvature of its component lenses. A doublet magnifier such as this one can correct for spherical and chromatic aberrations. This is useful to geologists & gemmologists who study minerals & precious gems. All the better quality ones are characterized by having quality glass lenses protected by a metal cases. More economical versions fold in & out of plastic case-holders. More routine use of hand lenses can provide information on texture and structure.

Diverse fields of study make routine use of hand lenses. Agronomists use them to study soil characteristics. Botanists & horticulturists identify plants according to floral, left & root characteristics. Entomologists identify & classify insects by types of eyes, antennae, legs, hairs, even genitalia. Paleontologists ponder the nature of fossils according to bones, teeth, shells & so on.