
Best for viewing fluorescent materials up close. Because it emits UV at 365nm, it has a higher UV to visible light ratio than many other black light sources, greatly reducing magenta cast. Stones that look pink in the cheaper black light look orange in this light. There is also visible violet light. The only way to further improve the ratio of UV to visible light is to add a UV filter. However, this light is not the best to add such a filter. UV filters are expensive, so you need a light with a small aperture, so you need a small filter. Because of its low power (2W), it is best used at close range. I placed it on the lap of the gooseneck table.