ULTRA VIOLET (UV) TRIPLET LOUPE
Ultraviolet light magnifier for testing fluorescence in gemstones
BUY NOW: CLICK ON THE PICTURE
You need a UV light but not necessarily a loupe, we have many UV torches, click here to see them.
a fascinating article all about what you can see with UV light, click
here to see it.
If you want a magnifier with a UV light, be extra careful about who you buy it from. Below are two sets of photographs showing a ruby, one with an unbranded 10X loupe with UV light (the size happens to be 10X21), one with the QUICKTEST 10X loupe with UV light (the size happens to be 10X20). Both loupes also have a rim of ordinary (white) light, you push the switch one way for white light, the other way for ultra violet light. For a closer view, click on each of the two images.
First, the unbranded
loupe (all four pictures are of the same loupe).
the QUICKTEST 10X20 loupe with UV light (all four pictures are of the
Please note that using ultraviolet light is not a 'test' for ruby, because whilst some ruby (e.g. Burma ruby) fluoresces brilliantly, some does not fluoresce at all; the above is just to show you the difference between the quality of ultraviolet lights (click here to read all about wavelengths).
How to choose a magnifier (plus everything you would ever want to know about magnifying lenses)
How to choose a jewellers' loupe (including examples of what you will see through loupes)
How choose a binocular headband magnifier (from simple hobby model to a professional surgeon's / dentists models)
How to choose a magnifier for the partially sighted (specialist low vision aids including lenses and video magnifiers)
How to choose a video magnifier (from small pocket-size electronic readers to a large table model)
Calculator (Excel format) - enter the magnification, it tells you the working distance, or enter the working distance, it tells you the magnification.
How to choose a stereo binocular microscope (all sizes and magnifications)
Professional USB microscope attachment (it replaces the eyepiece of your microscope)
QUICKTEST, Watford, WD18 8PH, Tel. 01923 220206, email info(at)quicktest.co.uk