Yo-Yo holder how-to question

So i made my new Yo-Yo holder yesterday, but I want to make it like this YoYoExpert Blog & Yo-Yo News – The Lockett Clasp Yo-Yo Holder!

Does anyone have an idea how to make it like this or the name of that design so I can do some further research on it?

Any advise would be greatly appreciated. Thanks in advanced.