In order not to destroy the avocado there is a simple trick to open it, remove the bone and cut it with style and in a few seconds.
Open the avocado in half with a knife to the bone. Turn both halves, each in a sense to separate them. In one of them the bone will remain.
Take the half in which the bone has remained with a cloth and With a dry blow he nails the edge of a knife. Turn the knife slightly and the bone will come out.
To peel it, you can make avocado strips (like segments) in each half or dice. Make longitudinal cuts alone or in a grid, as you prefer, and remove the content already cut with a tablespoon, passing it flush with the skin.
And as a picture is worth a thousand words ... look how simple and what result.