Avocados will ripen in your fruit bowl but to accelerate the process, pop in a brown paper bag and include a banana or apple. These other fruits give off ethylene gas, which is a ripening agent.
For pre-ripened avocados (those which have been treated with ethylene or other ripening agent to speed the ripening process), simply place in your fruit bowl to finish off the ripening process which should occur in 2 – 3 days.
Ripe fruit can be refrigerated uncut until eaten, but limit this to two or three days.
Purple Brown - soft ripe
Brown Green - firm ripe
Store in fridge to keep firm or continue to ripen in fruit bowl until purple brown.