Quick Proportions Help

[SB621]

I have an EC tourmaline that is 8.82 x 10.45 mm and I would like to set it down the road into a 3 stone with side stones similar to my inspiration ring below. I really like the layout and these proportions the best. Out of curiosity what size do you think I would need for the sides? I'm not ready to start contacting vendors yet so I'm hoping my lovely PS'ers can give me an idea.

 

[pandabee]

Pretty! I have been feeling out options as well for a zircon to put in a very similarly proportioned 3 stone but my stone is 8x6. I am looking for slightly skinnier traps so I think my sweet spot will be more like 6x2.5 or 6x2. I think for your larger stone 7x5 traps might be best? I think how the picture is sized it actually shows up very close to life sized on my computer screen (minus the obviously large shank, the stones seemed to line up with a print-out I had of trap sizes I printed out form Africa Gems) so that's how I am guesstimating 7x5

 

[diamondseeker2006]

I was guessing about 6x4mm.