TTry both colours, one would look better. Yellow looks better on my skin compared to rose. RRose look so muted against my skin colour. I find Rose is a trend, Yellow a classic.
I was going to say yg because I think it is a bit more classic in the long run..even though I love rose gold..But since you said you own rg jewelery as opposed to yg I def think you should go with rg.
I'd say try both YG and RG on. I was set on getting a RG watch, but at the store I still tried both on. After trying both on, it was clear to me that RG complements my skin tone better. YG just didn't go with my skin tone at all, it sort of looks OTT or clashing if that makes sense. RG is obviously the better choice for me, I don't know for you though
I think you should try both and then decide what looks best on you.
I really like rose gold on my skin, but I hate how yellow gold looks on me, although I often admire it on other people.
Both are really really beautiful and if you were planning on getting another one down the road then either is fab. But if it is your only one, I would lean towards the YG only because it is totally classic.