🔍 Discover the Glow of Knowledge!
The Long-Wave Fluorescent Minerals Collection features 15 meticulously coded specimens, each measuring approximately 1.5" x 1.5". This collection is designed for educational purposes, allowing users to study the unique responses of minerals to long-wave ultraviolet rays. With exceptional technical support available during business hours, this collection is perfect for both individual learners and educational institutions.
B**.
Not very colorful or bright
These stones in my opinion are not very colorful or bright. There are a couple of bright orange stones (3) but that is about all there is to brag about. Again this is my opinion but I don't consider them worth anywhere near the price I paid.
J**R
Low Grade Material
Most of the minerals in this display were really low grade and weakly luminous under 4 different frequencies of light: ShortWave UV 254nm, MidWave UV 307nm, LongWave 365nm, aand Far Violet 5mw laser pointer. Most of the rocks were like something you could probably find in the nearest empty lot on a dark night. Most were not display quality. That said, a few worthwhile specimins did show up. The Wernerite has a nice bright yellow glow in longWave and FarViolet light. There is some Europium doped calcite that looks deep blue under everything but especially LongWave and Far Violet. Lastly, you may get some small unpromising brown pebbles of chromium doped corundum that do not do much of anything except under the Far Violet laser pointer which makes them glow with a fiery intense crimson showing their kinship with the rubies they technically are. Considering how much garbage and really low grade material you are likely to get I would classify this as a rip-off and suggest you not waste your money,. You can find beautiful inexpensive specimens if you hunt around on the internet that are far superior to these. The suppliers could easily have found such specimins, broke them up into small pieces and created a really good set but they didnt. Just too greedy.Sincerely,Jerry
P**N
Only got 9 pieces of a 15 piece set.
There was a few really cool ones and I was impressed but I only got 9 pieces when it said 15. I would buy again possibly if you stepped your game up
A**R
You're not getting the exact color scheme depicted in the sales promo.
The specimens did represent a varied array of fluorescing colors and some were bright...but they weren't as depicted in the sale's promo. Each specimen is about the size of a radish (or smaller) so the specimens are fairly small. Importantly, you will need both Short Wave and Long Wave Mineral Lamp emitters to observe all color variations. The set is probably worth 1/10th of what you will pay for it. I did want something nice so I spent about $50 for my collection and am reasonably happy with it.
Trustpilot
1 day ago
2 weeks ago