That is terribly WEIRD!
Last week, I lost a special stone somewhere under my bed ... I heard it fall onto the hard floor in the middle of the night when I threw off a blanket, but was too tired to search for it. When I did in the morning ... and the next day ... & the next week ... and moved things about, even furniture ... there was no sign of it!
I joked on facebook about it having gone through a wormhole into another dimension, or through the space-time matrix (from under my bed to yours?!) I was / am very upset about it, since it was a gift from a friend who has moved abroad.
My stone was beigey-cream (!!!) & was an opal. A tumbled, raw opal.
I also have a couple of pink ones. They are opaque and feel slightly waxy to hold. They are supposed to have many 'healing properties', which you can look up online easily if you believe in that sort of thing. I'm not sure about all that, but I just love holding my crystals, & looking at them, & investing them with pleasant, relaxed memories & feelings to help me overcome anxieties & sleep (like "anchoring" & "re-triggering" in self-hypnosis / autogenics.) I have a wide selection of different colours, shapes & textures to enjoy. Works for me!
Anyway, how strange that I lost a creamy crystal under my bed & you found one!!!
I don't think yours is a moonstone, since those are white-ish and transparent or semi-transparent, and glass-like in texture, with a shimmer. These kinds of opals are waxy with no shimmer, and opaque.
Could you post a picture, please?
Enjoy it! (Or send it right back here if it's my one! lol.
)