Incredible Hyalite Opal Specimen - 100% gem Quality Botryoidal Crystal- GLOWS Neon Green Under Blacklight

Gem:  Hyalite Opal Weight:  1.76 grams Dimensions:  20 x 11.8 x 9.8 mm Clarity:  VS+, incredibly cean for hyalite opal Origin:  Zacatecas, Mexico Treatments:  None Comments: Gems that do tricks are the best.  This is available as either facet rough or as a secimen.  Personally, I think it makes for an outstanding thumbnailspecimen.  It's a great size and aesthetic to sit proudly in a thumbnail collection, or any collection, really.  Especially one that you are trying to liven up!! In daylight, there is a faint yellowish glow in this piece.  Thats the UV rays in the light reacting with the uranium in the opal.  Under a blacklight the green is EXPLOSIVE and rather amazing to behold, knowing it's a completely natural gem. Yes, you did read that right.  the UV light reacts with trace amounts of uranium trapped i the opal, and the glow is the super fun result!  Don't worry, though, these opals have a very low, safe, background level of radiation, similar to granite countertops.  No need to