I'm more of a sapphire fan. I love pink sapphires and if I get an engagement ring, I would be perfectly content getting a pink sapphire stainless steel ring from TeNo. I think I like to lean toward the more modern jewelries because their lines are a bit cleaner and I can pull it off better.
As for diamonds, I only like it if it's pink, but I cannot imagine wearing it (now if it's a diamond Hermes bag, that's a different story). Also, aside from the controversy behind diamonds, I prefer sapphire more also because I'm a bit of an astronomy geek. I read that while diamond is rare on Earth, it's abundant in space - I guess I don't want to share the same rock with the extraterrestrials. J/k.
Either way, diamonds are gorgeous though, even though I STILL prefer sapphire more.
You're hilarious, Kou! I have to say I am partial to sapphires myself. Have seen sapphires is most of the colors it comes in. Wish I can keep them all! Of all the sapphire colors I have come across, I believe that the natural (untreated) orange/peach padparadscha is the rarest (aside from pigeon blood red sapphires (aka rubies, of course).
Among the sapphires, I like pinks and reds the most.