florescent diamonds ...

[Willee - Texas]

Florescent diamonds ... ever shine a UV light on a diamond?
Some will light up and some will not.
CZ's will not.
Are their any other clear stones (diamond look alike) that will glow under a black light?

 

[Jiminsandiego]

I used to hunt for fluorescent minerals in so cal and Arizona. Rubies and sapphires (same thing, corundum) should fluoresce. Sheelite crystals(tungsten ore) fluoresce. There was a hay day for the sheelite hunters for the war effort. UV comes in short and long wave and some stones like alexandrite will glow different colors under short and long waves. Kunzite( very light pink stone) will actually glow in the dark after turning off the UV light ( looks like a burning ember). Some diamonds are actually fluorescing out in the sun giving them an extra "sparkle". I've found some diamond chip jewellery that I should hold under the UV light. Short wave UV usually gives better results. Walking around old mine dumps at night seeing the rocks glow like a 1960's black light poster is a real kick. Walking around your house in the dark with a UV is also very interesting.This is all from my fading memories so may not be accurate. I'll be interested to hear how others answer your question.
Jim