Which size??

I’m trying to order, and based on the sizing kit I’m a size 7 on my index finger. The size 8 is fine, just a little loose during the day but snug enough at night. It wont fall off, but rotates slightly. The six fits snug on my ring finger.

I want to order the 7, but no stores around me have the 7 gold in stock or give me the option to wait for it.

Based on this, should I order the 6 or the 8?

For reference, I currently have the oura ring in a size 8 and it’s slightly loose on my ring finger but not so much so that it’s been an issue.