Strongest spectacles-type magnifier, lenses 3X to 25X, battery light Magnifier Style_Loupe or eyeglass it also excludes being overloaded

it also excludes being overloaded / dropped (e

Tourmaline

you might get "Moissanite" readings on diamond

or see a more detailed explanation of what the various types of tester can (and can't) detect at Electronic Gem Testers

Strongest spectacles-type magnifier, lenses 3X to 25X, battery light Magnifier Style_Loupe or eyeglass it also excludes being overloadedSummary Like a large pair of spectacles with slots for the 7 pairs of lenses supplied. Large choice of magnifications up to 25X. You can slot two pairs of lenses in each side, which gives a total of 21 different magnifications to choose from (see "Technical). Bright adjustable light with a choice of two filters (optional, you don't have to use the filters). Works well as a binocular magnifier (i. e. you can use both eyes and have stereo vision) up to