ISO! Symbol Pearl Signet Ring

Last seen on the website called Polyvore, this ring has a white band of unknown material, a pearly cabochon shaped stone which is surrounded by an 11 symbol engraved golden rim, and a diamond-like stone on the top edge of the main stones' setting. I really don't know much of this ring beyond my best guess at what basic jewelry descriptive terminology would most accurately describe this ring. I also only have one image of this ring. If anyone has more accurate terminology that properly describes this ring better than what I have previously stated, please correct me. Please bring any additional pictures of this same ring to my attention as well. If anyone has correct information about the materials that this ring is made out of please tell me in the comments too