Set of 10 Medium Short Wave UV Reactive Fluorescent Mineral Rock Specimens

I initially wrote a negative review of this product as these rocks didn't glow under black light. The seller has been very responsive and since then I have educated myself about the difference between shortwave UV lamps and regular old black lights. Unfortunately, the former seem to be very hard to find on Amazon (if they are sold on Amazon at all, maybe I'm not searching using the correct keywords). I was only able to find the necessary high-quality shortwave lamps on specialty science or hobbyist sites. Please just be aware of the difference between these lamps BEFORE you purchase. These particular rocks will NOT fluoresce under blacklights, although there are other kinds of minerals that WILL glow under blacklight. I unfortunately can only give 3 stars because I don't have the right kind of lamp, so I don't actually know how well these fluoresce. But the seller gets points for customer service and responsiveness. I wanted to write this review because judging from some of the other reviews here, I am not the first to make this mistake.

I'll reiterate... 2 stars for 40% of the minerals being even "slightly" fluorescent. Bummer. Not worth it!

These stones do not glow under black light, uv light or any other light. They totally misrepresented this product.

dont glow very well, they really only glow under shortwave which is much less safe, and harder to get then longwave. also they just barely glow. i had much better luck finding brighter stones in my driveway! and the labels suk, the writing on the labels (telling you what kind of stone it is) falls right off in minimal handling and during shipping to me.

Very disappointing. They were returned.

They do not fluoresce very well