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Rich green Greenlandite (also known to many as aventurine) cabochon, a true gemstone marvel that encapsulates the captivating beauty of nature. Crafted with precision and care, this stunning cabochon boasts a mesmerizing blend of vivid green hues and delicate shimmering inclusions.
Greenlandite consists of quartzite with a green chromium-bearing mica, fuchsite (a variety of muscovite), giving the stone its bright, green coloring. The fuchsite can resemble glitter distributed throughout the rock when polished.
The smooth, rounded shape of the cabochon allows for optimal light reflection, creating an enchanting play of color and light.
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.
