The stone is no longer under the coronation throne. Interestingly they cleaned the throne many years ago and were shocked to find under all the dirt a full zodiac .... but back to the point, the stone has been returned to Scotland and now resides in Edinburgh castle wether it will be used in any future coronations is not known. The elite certainly seem to revere a lot of these seemingly ordinary stones its a great subject for study 🙏🏻