If the eggs have a green ring around their yolk, it means that

Safe to eat: The green ring is purely cosmetic and doesn’t indicate spoilage.

Texture may be slightly dry: Overcooked yolks can taste chalky or dry.

How to Prevent It:
Cook eggs just enough — usually 9–12 minutes depending on size.

After boiling, immediately cool them in ice water to stop cooking.

Avoid very high heat; a gentle boil or simmer works best.

So, seeing a green ring doesn’t mean the egg is bad, just that it’s overcooked.