Have you tried these? Unfortunately imo the one with the ruby has no comparison. The ruby simply doesn't pop. I remember being so disappointed when I tried it on when it came out.
It obviously depends somewhat on the jewellery you have already and the colours you wear, but I’d say the yellow gold/diamond option is way more versatile. I have the mini earrings and they pretty much go with everything.
It really depends on your skin tone and preference on whether YG or RG. I bought the RG version and I wear it every day. It’s subtle but dressy enough for everyday. I get lots of compliments it.