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Gold Prospecting
Prospecting Equipment
Recommend a UV torch for gemstones?
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<blockquote data-quote="BigWave" data-source="post: 507615" data-attributes="member: 6786"><p>Hi Baz,</p><p>Yes you can buy cheap Long Wave UV (UVA) torches with wavelengths of 365nm and longer, however these are not really good to observe mineral fluorescence, and will likely leave you very disappointed.</p><p>To really get into this field you, may need to spend ~$400+ and buy a UVC (~254nm) lamp (or maybe even a dual UVA/UVC lamp), and know that some bulbs are proprietary (replacement bulbs may not be around forever), and even the best wavelength filters (viz Hoya) are expensive and degrade with use.</p><p>You'll also need to consider eye protection.</p><p>The attached article is a big but recommended read. It discussed the technology (largely associated with mineral fluorescence) and compares some of the better products. Check the other areas of their website for great info on minerals and their fluorescence.</p><p><a href="https://www.naturesrainbows.com/mineral-light-review-1" target="_blank">https://www.naturesrainbows.com/mineral-light-review-1</a></p></blockquote><p></p>
[QUOTE="BigWave, post: 507615, member: 6786"] Hi Baz, Yes you can buy cheap Long Wave UV (UVA) torches with wavelengths of 365nm and longer, however these are not really good to observe mineral fluorescence, and will likely leave you very disappointed. To really get into this field you, may need to spend ~$400+ and buy a UVC (~254nm) lamp (or maybe even a dual UVA/UVC lamp), and know that some bulbs are proprietary (replacement bulbs may not be around forever), and even the best wavelength filters (viz Hoya) are expensive and degrade with use. You'll also need to consider eye protection. The attached article is a big but recommended read. It discussed the technology (largely associated with mineral fluorescence) and compares some of the better products. Check the other areas of their website for great info on minerals and their fluorescence. [url]https://www.naturesrainbows.com/mineral-light-review-1[/url] [/QUOTE]
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Gold Prospecting
Prospecting Equipment
Recommend a UV torch for gemstones?
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