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Nature’s Rainbows is a non-commercial web site maintained entirely by volunteer hobbyists and contributors.  Our mission is to provide information about UV and luminescence, premium fluorescent mineral photos, and a fluorescent mineral database for the enjoyment of FL mineral collectors around the world.  Information on this web site is covered under a Creative Commons License.


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Technical Specifications of UV Related and Fluorescent Mineral Technologies

Unlike daylight rock collecting, the fluorescent mineral hobby requires some special equipment:  UV lights filtered to block the visible light from the UV bulbs (lamps) but let out the UV, protective front panels for mineral displays to protect viewers from UV, special lamps/bulbs to generate UV, and UV LEDs as a new and efficient way to generate UV.

As we discover new specifications and details on these technologies we will add them here.  If you are aware of any technical data which should be included here please let us know.

UV Filters (click graphs for larger image)
Hoya U-325c UV Bandpass Filter

Hoya U-325c UV Bandpass Filter
Ultraviolet transmitting, visible abosrbing filter

Transmission Graph

Ultraviolet transmitting, visible abosrbing filter Transmission Graph
ZWB UV Bandpass Filter Spec

ZWBn UV Bandpass Filter
Ultraviolet transmitting, visible abosrbing filter Transmission Graph

(NOTE: This material is not suitable for use with shortwave (UVC) lamps; Hoya is the preferred filter material

Fluorescent Mineral Display Windows

Acrylite OP3 is the standard in our hobby for protective display windows/panels.  The pdf below explores this material in depth.