Do i need a spacer between these?

[RRfromR]

I'm worried about the art deco mounting getting damaged. TIA!

 

[lavenderdragonfly23]

Beautiful setting… wow

I *think* you should be ok with the channel set band, but honestly- with an irreplaceable antique setting you love, I would wear a super thin spacer - just for piece of mind.

Enjoy her!

 

[Slickk]

I think it’s ok with the channel set. I would do it. Unless the band is particularly sharp edged…if you got a spacer it should be rounded I think. Pretty set!

 

[ItsMainelyYou]

I'll third this, it's exposed diamond that creates the most wear.
You are lucky to have two 'walls' or rails doing the rubbing. It will wear, but at a much slower rate- mostly you'll notice the milgrain degrading on your band as it's the lower profile.
A small rounded 1mm spacer will likely keep that from happening and be unobtrusive visually if you choose, but it's not imperative.
This set you have is beautiful together

 

[Smith3]

I love this ring! One of my favorites I have seen.
I agree with everyone else, but I do think it would be stunning on its own.

 

[RRfromR]

It's a little textured, so I hope it will works.