Here is a 18.75Ct Bi Color Amethyst Pear Shape. This is part of a collection of gems that will be auctioned this week. If you collect stones or love to design your own jewelry- this is a gorgeous and very exotic bi color stone. This over 18.75Ct stone is a pleasure to see. Amethyst is the February birthstone. It will be auctioned to the highest bidder at $1 No Reserve.