Symbols (logos / graphics) for Nuclear / Radiological / Radioactive, Chemical / Corosive, & Biological / Biohazard / Infectious Disease / Pandemic hazard / danger warning, realized as a tie bar / tie clip.
WMD (think "weapons of mass destruction")
☢☠☣
⚛☮☯
CAUTION:
As there is no way to guarantee consistency in the manufacturing process, use of this on your (expensive/silk) ties is at your own risk.☺
(a little hand burnishing with light emory cloth or emory board should smooth things out )