These video game rings are custom made by CustomMade maker Brittany Foster of BMF Jewelry and feature the "companion cube" from the video game Portal.
The story goes that a CustomMade client named Justin was looking for an interesting idea for his engagement rings so he decided to look up images from an interest common between him and his soon to be fiance. Once he found the "companion cube" he searched CustomMade and found the designer he wanted.
Brittany Foster accepted the challenge and created four different video game rings for him to choose from. Justin chose the most classic look and the ring was cast in stainless steel.
Hopefully Justin's video game rings were a hit with the Mrs.