Mexico Inlaid Jewelry - Photo's Included - Would like maker?

[TS595MC]

Finally was able to get some images. Hopefully they're not too large. Any The circle mark reads Hecho en Mexico and in the middle 925 and the initials "JR" To the side is Mexico but underneath I can't made it out. Sorry the mark isn't better. I took many photos but couldn't get any clearer.

Also the image of the mark is upside down. Thanks