Silver base for 17mm Square Cabochons

This is a silver coloured, plastic base which has space for two 17mm square cabochons to be attached- back to back. There is a raised seam around the edge so once the cabochons are glued in place- they look like part of the base. The base has a diagonal hole drilled through the middle so it can be strung vertically and it was made in Germany. Please note that the cabochons are not included.