I believe the diamonds are real, but not sure of the silver content. Inside the band is stamped 925, and a D in a square. All I was told when I got it, was exactly what I put in the description. Sorry, that's all I know.
Here is some info I found on goggle on markings ewelry Stamping: Hallmarks ... Sometimes, tiny diamond or other mineral crystals are trapped inside a diamond ... Princess Diamond a.k.a. Square Diamond .... D. 2. 1.5. 0.53. 13.46. 1.67. 42.3. 2¼. D½. 0.538. 13.67. 1.69. 42.9. 2½. E. 3. 2.75 ..... For example, 925 mark will appear on an item composed of both 14K Gold and .