The green ring is an item from Shadowgate 64: Trials of the Four Towers. The ring lies within Lakmir's Tower along side the blue ring and the Ring of the Dead. Upon wearing this ring, the main character, Del Cottonwood, will die.
"You put the green ring on and the rooms begins to swim and you fall to the floor." -narration upon wearing the ring
- Despite being not important to the storyline, the green ring does come in handy during the wall quiz trial in the Trials Tower.