Scimitar Egg Stand

I have these two granite eggs among my collection of trinkets, but I can't keep them on my display shelf because every time something shakes the house (such my cat jumping off the window sill, or the quarry down the road blasting), they roll off, sometimes knocking other objects over in the process.  Therefore, I decided to design a stand for them, as well as other round objects in my collection.  The prongs that hold the object are in the basic shape of a scimitar, a type of sword, hence the name.  

The medium egg stand is approximately 5cm, or 2in diameter at the base.
The large egg stand is approximately 7cm, or 2.75in diameter at the base.