And here I thought that you did not take selfies
Nice, looks like an alien world.
It's an upside down cut glass (or crystal) tumbler.
Not even close. M'Lady bought me a bag of marbles and after trying a few different setups I settled on pouring them into a plastic container, placing the nicely colored ones in the center with one on top of the rest, shooting almost straight down and lighting from above and slightly to the side with a small diffused spot. Lots of fun.