Jewelry with horse head stones

I have some jewelry from my horse collections. The bracelet has a stone with two horse heads. The pin also has a stone with a single horse head. Not a matching pair but very similar. The small horse charm is made in Japan. All are in good condition for the age. I can not be sure on the materials; some type of metals. Not sure on the 'stone' could be resin or plastic of some kind. I have had these since the 80's. They were bought at auctions or other sales. I have decided to sell most of my horse things and will post more in the future. Selling together. Will not sell single piece.