Don't get discouraged. We have all found things we got excited about, only to find out later that it wasn't what we thought. A long, long time ago, I found two huge Spanish rowels(the twirley things on spurs. I was so happy and I wanted to sell them to a museum. I was on our friend's ranch and when I showed them to him, he informed me that they were mailbox decorations that he bought at a hardware store and attached to the mailbox. His wife ran over the mailbox and he had to buy a new one. He asked for the rowels and I helped him put them on his new mailbox. Don't give up. L promise the finds will come. As for your object, natural or not, it could have been found and used by someone a long time ago. It attracted you, didn't it? Keep hunting and good luck...