You did recognize it, didn't you? This should be true.
But the last sentence "local visible filling phenomenon" disappointed me.
Generally filled tourmaline belongs to low-grade goods, which may not even be worth 232, because it has lost its natural meaning and has been artificially added.
I know you must be very sad, but you are not the only one who bought jewelry, especially this kind of gem. So I suggest you buy this kind of tourmaline jewelry, and go to a regular business, especially a powerful business.
I hope you will take a warning, and you must shop around before you make a move.
I hope it helps you.