P.S. Oh dear - look what happens when you are rushed and do things too fast! I did not realize I had pushed "publish" instead of "save as draft". I was just putting a title on this photo that I had downloaded for a possible future post. I had intended to leave up my previous post on grief work for a while. I hope some of you will take the time and check out that post too.
Since it is up ... and ... since you asked, I do not do mosaics. It is not my work. I merely took a photograph of the glass mosaic plate displayed in my office window, and then played with the photograph a bit on an editing website. That is where I 'embossed' it. So it is the photograph that is embossed, giving a slightly different appearance to the plate.