Small jewlery engraving

Hey guys, My boss has tasked me with looking into an engraving machine for the shop and I feel in over my head (not super tech literate) NEEDS: -She needs it for small jewlery engraving (think 3-4mm wide disks with roughly 1mm of depth) -needs to do titanium, 14-18k gold, glass, and possibly steel -we don't need an industrial sized machine

Through my research I've found that fibre engravers would probably be best with what she's wanting to do but other than that I don't know about the wattage etc

She's not one to balk at prices but I wanted to come to her with some price range options too.

If anyone could recommend some makes and models to get me started in the right direction I would be endlessly thankful!