Amethyst and Jasper Earrings in silver and buying gold

In the 90's I purchased 4 items designed by jewelry artist R B. Sadly I have lost the records with his/her name. I still love these pieces but I am selling all my jewelry because I have no family members that buying share my love of jewelry. I got these earrings to go with the purple themed pendant listed on this site. I am not sure the stone is jasper, I suppose it could be agate.. If anyone knows this artist, please share with me.(see the other listings by this artist)