Parting with the item shown and as found. From a long time service station owner's estate from years ago. I have not cleaned or tried to improve. The lot includes:
A tie tac with D-X Sunray 20-year award emblem with a likely diamond, but a clear stone, nonetheless. The tie bar is marked 10k, and Boswell.
Using my cheap little scale, the tie tac without the back clip weighs 3.6 grams (not included. Be your own judge as to weight and possible melt values.
Tried to determine scrap value of gold and listed somewhere under that amount.