I don't remember it ever taking so much time to mature. I've had this one for over a week and it's still very hard. I had to really work with a spoon to extract the meat and don't think I can mash it for guacamole. Decided to give it the juice of two limes, cover it and wait a little longer.
All kinds of info on the Internet on how to ripen an avocado but I didn't think it was necessary because it looked so healthy. Paper bag (where do you find one) and put it in a dark place. Maybe next time but hope there is not a next time. Now I'm hungry :}