This gadget is called The Book Gem. I am not sure if it really is, but I leave you to decide. (I hate it when manufacturers give their products an over confident name.) This product is, again, a tool to keep your books open. Can these inventors please find some other bookish thing to concentrate on? We have loads of these “gadgets-to-keep-your-book-open” already.
But hey, this might be the tool to keep your book open you have been looking for. So, here it is. Click here to go to the page.