Watched the Super Blood Moon the other day; rather brilliant really, though not as impressive as the Diamond Moon of Ragtoroknor... hope I spelled that in Earthling correctly, it really doesn't translate right. There's meant to be a sound that isn't represented in the human language.
Regardless, brilliant moon made of diamonds, and when the sun gets behind it it creates a prism of rainbows all across the planet. Very beautiful, incredibly dangerous, and half-mined by the Rag people for quite some time. But don't worry, they've replaced it with synthetic diamonds.