It's a nice little puzzle made entirely from wood apart from a couple of pieces in the internal mechanism. You might be able to see in the picture (if you squint a bit) that there is a dovetail joint holding the two halves of this puzzle together that you should be able to implement to open the ball, but it will only slide so far in each direction before becoming stuck.
There is only one thing that I didn't like about this puzzle, and that it that it does move about quite a bit along it's join even when it is in the unsolved position. I would've preferred if it were totally fixed in place until it was solved.
The Dragon's Egg utilises a classic locking mechanism, and as such most people will have it open in only a couple of minutes at maximum. But the puzzle does look great on display, and is perfect to hand over to friends to try out at parties and the like. Plus the cost is pretty low too!
I purchased the Dragon's Egg puzzle from a really nice guy called Dave Janelle over at Creative Crafthouse. Another company that is great to deal with.