


makers mark?
Hi! I bought this ring at an antique shop. It is stamped 14k and then either I. M. U. L. OR M. U. L. I was wondering if someone can help me identify the makers mark so I can determine if it’s genuine. I’m assuming the diamonds are lab grown, but not 100% sure. They fluoresce yellow under UV (365 nm). I did not see any phosphorescence under 365 or 395 wavelengths. If anyone has any info that would be awesome!