Prismarine is a stone-like material that only appears underwater in ocean monuments. This block has several variants, including prismarine bricks and dark prismarine.
A raw top round steak in a pan. A round steak is a beef steak from the round, the rear leg of the cow. The round is divided into cuts including the eye (of) round, bottom round, and top round, with or without the round bone (femur), and may include the knuckle (sirloin tip), depending on how the round is separated from the loin. This is a lean cut and it is moderately tough.
If one is not sure if a given steak is a ribeye, all one has to do is look for this muscle which runs along the outer edge of the steak. RE the eye, I believe the eye refers to the largest part of the ribeye, the round muscle which makes up the majority of the steak. But this may seem counter-intuitive, because if one trims off the other parts of the steak leaving only the eye, it's no longer a ribeye, because a ribeye steak must include the Spinalis muscle. The page seems to describe the ribeye steak and rib steak by simply referencing the bone.