These are the rings in my collection that fit well with this 2mm curved band:
https://www.shantasticjewelry.com/product/curved-wedding-band-stacking-ring-sterling-silver-or-gold
8) https://www.shantasticjewelry.com/product/pear-cubic-zirconia-engagement-ring-13x9mm-sterling-silver
Also fits: https://www.shantasticjewelry.com/product/pear-cubic-zirconia-engagement-ring-10x7mm-sterling-silver
https://www.shantasticjewelry.com/product/pear-cubic-zirconia-engagement-ring-12x8mm-sterling-silver
More to be added in the future!