Recently, I have been hunting for Infinity Stones (fluorescent minerals) online (and you can read more here) and as I recall I have an LED UV Torchlight which can light up the fluorescent property in the minerals. (click here to read more) But because my LED UV torch is too strong in a purple hue and I don't know its wavelength; based online, they claimed mine is a Long Wavelength UV torch.
But a Short Wavelength UV will be best for fluorescent minerals but it costs a bomb...
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| I got this from Shopee for $4. USB UV light torch. Sounds like a good deal. |
