tie clasp
tie clip
tie pin BrE , auch: tiepin BrE
tie tack AmE

I use to have a tie pin in a similar shape.

Hiro can see the diamonds in his tie pin flashing from a hundred feet away.

The Smiler stared softly at the green stone in the man's tie pin.

Drivers on the Northern Line still bear a tie pin based on the sculpture.

At the end of their encounter, Tzigara received from the emperor's hand a diamond-and-ruby tie pin.

"I'll trade you for my tie pin," he proposed.

Everywhere you look, entrepreneurs are inventing things like a computer that will fit inside your tie pin.

Michael stared at the tie pin glinting up from the red velvet lining.

Shoving his hands into the pockets of his overcoat he felt the little box that contained the tie pin.

Mr. Lauren likes real men's ties, punctuated with classic tie pins.