Vintage Scottish Traditional Thistle Kilt Pin Brooch With Lilac Purple Amethyst

Vintage gold tone (possibly 14K gold plated) traditional Scottish thistle kilt pin brooch. With light purple / lilac insert that looks like amethyst. It may also be foiled on the back, which was common at that time. Very old, likely from before 1920th because the pin needle sticks out quite a bit. Not marked. In good condition, with some gentle signs of wear, mostly on the back.