Ambi Ring is a wearable modern take on the famous optical illusion, the Ambiguous Cylinder.
Depending on your angles, this ring can be perceived in one of two ways — a circle or a square.
This tactile piece of illusion is meant as a conversation starter or can be applied to your favorite ring routine.
The Ambi Ring was precisely designed from the ground up with high quality stainless steel. You can choose between silver and black, along with a matching necklace.
– Link to online video instructions