Your comment about TSA sent me on a search for a kilt pin that did not look like a small dagger. I found a nice bit of jade, "Antique New Zealand Souvenir Pounamu Nephrite Jade Bar Gold Bar" that looked quite nice and ordered it after discussion with my female kin. Only issue is it is smaller than I was expecting, about 2 inches long. Further research indicates it is a style of brooch that seemed popular at the time. I am still considering wearing it as a pin. It is more delicate than my other kilt pin. Any guidance?

I also think it is less likely to cause commentary by TSA being obviously a bit of jewelry.