What kind of spacer ring should I do?

I need advice on what kind of spacer ring I should go fortwisted rope? Knife edge? Silver or Rose Gold color? I know 1.5mm is a good thickness to start with but the style is where I don’t know

Rounded Spacer Band

Should I solder my rings, wear a spacer, or risk prong damage? : r/jewelry

Pave Diamond Open Spacer Ring, 14k 18k Solid Gold Stack Wedding Band, Promise Anniversary Jewelry, Under Solitaire Straight Band Ring

3 Reasons You Need A Spacer Band In Your Ring Stack - Adiamor Blog

CHROME HEARTS Ring 2356 304 9311 9208 Spacer R 0.2 CH Forever Silver –

Phobya Spacer Ring 3mm - Knurled - Black Nickel Plated by Phobya

Rounded Spacer Band

Ring Pairing: A Detailed Guide for Finding the Perfect Wedding Band fo - Aurora Designer

Do You Need A Flush Set Engagement Ring? - Adiamor Blog

GREAT SOLUTION: for fingers with knuckle problems and without having to re-size, perfect for loose rings. Soft and Flexible material, safe to use on

Ring Size Adjuster for Loose Rings for Any Rings Ring Size Reducer Spacer Ring Guard