Mine is the lone (so far I1)- BUT it was inherited from a ring that belonged to my grandfather- and i have my grandmothers band- so my set will be their set. and luckily the inclusion is white so it is not noticeable in all lights.
I own two diamonds--the big one is an SI1. The smaller one is an SI2. Both are eye clean and have very clean inclusion plots. I'm not sure why they are SI but they look really clean to me.