Stunning, well-terminated Cerussite crystals from the world-renowned Mibladen mining district in Morocco, known for producing top-quality mineral specimens. These complex, pyramidal Cerussite formations feature beautifully beveled, stepped faces and exhibit a bright yellow fluorescence under 365nm longwave UV light, a highly sought-after feature for collectors of fluorescent minerals. Accompanied by orange-pink Barite crystals, this combination is a classic hallmark of Mibladen specimens and highly desirable in the mineral collecting and UV-reactive mineral communities.
Select the piece you want to buy by choosing the number. You'll get the exact crystal shown in the photos.
| 1 | 1 oz | 1 inch | $30.00 |
| 2 | 1 oz | 1 inch | $35.00 |
| 3 | .5 oz | 1 inch | $27.00 |
| 4 | 1.1 oz | 1.25 inch | $32.00 |
| 5 | 2.5 oz | 1.5 inch | $50.00 |
| 6 | 1.9 oz | 1.25 inch | $35.00 |
| 7 | 0.8 oz | .75 inch | $45.00 |
| 8 | .8 oz | 1 inch | $45.00 |
| 9 | .8 oz | 1 inch | $35.00 |
| 10 | .9 oz | 1 inch | $35.00 |
| 11 | .7 oz | 1 inch | $28.00 |
| 12 | 1.2 oz | 1.25 inch | $30.00 |
Photos taken using our GloBox 365nm UV light housing. These crystals will show best using a 365nm/255nm FILTERED UV flashlight.
They were nicknamed "Yooperlites" which is derived from the name “yooper”. A yooper is a nickname for the Upper Peninsula natives and these fluorescent stones quickly gained fame. After data was published on these fluorescent stones, it was discovered that sodalite is the actual true mineral that is fluorescing orange.
365nm UV light is often called "blacklight". Before the advent of longwave UV LEDs, blacklight fluorescent tubes, (the kinds used in hippie days to light up psychedelic posters) were the standard longwave UV light for our hobby. They were not very powerful but they did light a large area.
Enter 365nm UV LEDs
First, an animation showing the difference between the UV flashlight we recommend (365nm filtered UV flashlight) versus unfiltered 395nm UV flashlights we see many folks carrying around at shows. So. much. visible purple light. We selected a bunch of rocks as a demonstration. Took pictures of them under his flashlight without the filter and then with the filter.
