Vintage Unbranded Gold Tone Men's Tie Tack With Black Onyx Stone

This is a classic vintage unbranded men's tie tack. It's a gold tone metal with a black onyx kind of stone accent. It does not look to be made of any precious metals. Tie tack is in decent pre-owned condition with some signs of wear and age. Some all over marks and wear. I've listed multiple up close pictures for reference. Please let me know if you have any questions or would like any additional photos. $.50 from every sale goes to our local food bank. Please let me know if you have any questions regarding this. Thanks:)