I came across of rough in my random collection of some items known in high detail other, honestly I have, had to rely on my sloothing experience to provide an answer. But I have one I am stumped on, it is perfectly transparent faint glow in a violet or pink under black light, thing that gets me is it’s hardness. First instinct is that this piece was quartz from the the clarity, and concoidial fracture but it is harder than all the varieties I have, (amethyst, rock crystal, flints and agate, nothing, they don’t touch it, then with beryls, still really nothing, then some saphires give the scratch, I expected the beryls would provide if it was a quartz. I have bought multiple small parcels of beryls to learn and developers my faceting skills, but I do not remember this piece, to me it is a striking piece and will make a very nice finished stone, but I wrote if off as quartz so was not in a hurry to work on. But now I am stumped, it just seems to good a piece of morganite or geothite, aside form topaz what else could I be looking at with an 8 hardness, could it be synthetic? What other test can I do without much for specialized equipment.