Doesn't show quantity when trading

Sell rift Breachstones carefully!
I sold 10 Breachstones by accident.
An offer came for one Uul Breachstones . Sold.
All Uul Breachstones from the tab are sold.
It does not show the quantity either on a trade or when an offer is received. There are no quantity numbers in stone.
English is not my native language. Sorry