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Gemstones, Minerals & Fossils
Gemstones and Minerals
fluorescent gemstones
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<blockquote data-quote="user 4386" data-source="post: 293814" data-attributes="member: 4386"><p>The main issues are - (i) the lesser range of wavelength that you may have (if your manganocalcite doesn't fluoresce this can be a reason) - many cheap and light sources are designed to only produce UV at the very end of the range close to visible, for "fixing" nail varnish in salons and glue (ii) the power (need more total darkness to view with weak wattage and won't "excite" the specimen as strongly - the amount of coloured light you see emitted from the specimen is proportional to the amount of energy you shine on it), (iii) the lack of a filter, so that it is actually shining a small bit of visible light on the specimen not just pure UV. (iv) danger - how sure are you that the cheap Chinese lamp it is not emitting strongly in the dangerous range that will burn your eyes (you can get around this by always wearing gloves and goggles, but most people only do this for lamps they know emit in the dangerous range.</p><p></p><p>Read my blog that I mentioned for more details....well under $100 will get you an excellent full wavelength portable and 240V rechargeable lamp plus UV safety specs (I paid about $68 plus postage from a rapid NSW Ozzie supplier) - if you are keen is it worth having less for your hobby?</p></blockquote><p></p>
[QUOTE="user 4386, post: 293814, member: 4386"] The main issues are - (i) the lesser range of wavelength that you may have (if your manganocalcite doesn't fluoresce this can be a reason) - many cheap and light sources are designed to only produce UV at the very end of the range close to visible, for "fixing" nail varnish in salons and glue (ii) the power (need more total darkness to view with weak wattage and won't "excite" the specimen as strongly - the amount of coloured light you see emitted from the specimen is proportional to the amount of energy you shine on it), (iii) the lack of a filter, so that it is actually shining a small bit of visible light on the specimen not just pure UV. (iv) danger - how sure are you that the cheap Chinese lamp it is not emitting strongly in the dangerous range that will burn your eyes (you can get around this by always wearing gloves and goggles, but most people only do this for lamps they know emit in the dangerous range. Read my blog that I mentioned for more details....well under $100 will get you an excellent full wavelength portable and 240V rechargeable lamp plus UV safety specs (I paid about $68 plus postage from a rapid NSW Ozzie supplier) - if you are keen is it worth having less for your hobby? [/QUOTE]
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Gemstones, Minerals & Fossils
Gemstones and Minerals
fluorescent gemstones
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