It's called a Lotus Box, and I think they are so lovely.
I have made a biscornu similar to this - photos below
Just picked up my needles after 4 years of gathering dust. I have already got back into increasing my stash!!!! It doesn't take long to get back into old habits.
The above is a pattern All You Need Is Love I have bought to make into a wedding gift for Bob's sons fiancée on their wedding day, I'm making it into an ornament on a ribbon so I can hand it to her on the day. It's stitched on 40ct Newcastle White Linen.
This is Victoriana by Connie Gee, I'm stitching it smaller than the original as I would like to find a box I can make this into a box topper. It is one of the loveliest charts I've worked on.