u/Confident_Being183

Hello! If anyone is able to feed a novice’s curiosity in helping me ID the type of rock this paperweight i bought in the UK is made of i would be very grateful! It is cool to the touch and pretty heavy and i cannot scratch it with my nails
Any help is welcome!

Hello shell-lovers :) i would like a hand in helping to identify what sub-species of conch shell this is. I think it is bleached and a bit eroded but I am having trouble finding any quality identification images on google. Any advice welcome!