Ok, that explains a few things, thanks Spence and Spring444. Now I see what he is trying to picture here... I'm not too sure if this has any design; it looks more like a small clasp to hold the turtle pendant. Now also what you could be seeing is a marking of some kind of a possible fineness wether a karat gold or sterling silver (925). Of course, whoever made this could very well have engraved a very tiny motif of a dragon

It is a very interesting little pendant you have there.