“The 10th stone is Crysolitus [Chrisolitium – chrysolite, ‘Greek Topaz’], that is of golden colour and sparkling as fire. Its power is to gather together devils and winds, and its virtue is to protect the place where is it [kept] from evil spirits, and from dead men, so they do not do there any evil, and [to ensure] that the devils obey [the wearer]. And its figure is a vulture, which is a vowter.” ~ Sepher Razialis
In this period the brown, gold and orange stones were commonly referred to as Topaz. It as has an appearance suitable to the purpose of conjuring the winds and the spirits in them. This ring is size 11 US.