Beyoncé once sang, "I'm so possessive so I rock his Roc necklaces." However, in her most recent Instagram video montage, one in which people speculate she reveals the gender of her forthcoming twins, Bey is rocking Jay's rock in a different form — specifically, a ring. P.S. if you have a hand in creating Beyonce's montage videos, please reveal yourself. As always, the Bey hive is on top of everything, immediately noticing that the ring that Jay Z is wearing is actually his wife's. 

We should have known, really. Jay once rapped, "givin' em Sinatra pinky rings with the blue diamonds and e'rything," in "Do U Wanna Ride," a song from his universally reviled album Kingdom Come. The piece in question, above, does closely resemble this description.

You know the old adage — the couple that shares diamonds together, stays together!