There are a few other anchor designs but I wanted to do my own. This was designed in Autodesk Fusion 360.
I also posted this model on Shapeways.com, since I wanted to see how it would look printed with metal. I linked a Make with it printed by them in Nickel Steel, and I really like how it turned out! https://www.shapeways.com/product/CHDB566GV/anchor-necklace-pendant
20% infill, no supports needed