Episcopal rings are issued by the Vatican and are usually engraved gold rings that will be returned upon the death or retirement of the Cardinal. Once appointed a Cardinal will usually commission a gem set ring. The favoured stones used in Ecclesiastical rings were sapphire, amethyst, ruby and tourmaline. Such rings are sometimes gifted by the diocese, remaining the property of the trust. In some cases the ring may be interred with the Cardinal upon his death. The large size is so they can be worn over a glove during full ceremonial regalia, sometimes with an additional band to enable them to be worn without a glove.