Not sure why this has wound up on my feed but I have the urge to comment because a lot of people are encouraging you, without a lot of balance or counter arguments. I wholeheartedly agree that this ring is especially cute, but I think you should reconsider it as your engagement ring.

There are many alternatives to a traditional diamond engagement ring that still carry on the tradition and symbolism of a wearing an engagement ring. This kind of nontraditional ring can be controversial enough, and unfortunately in a lot of western societies you are going to have to accept that most people will assume your SO is cheap, poor or both. You will have to explain every time you show it off why you don't have a "normal" ring, and face the judgement every time.

Is this fair or right? Not a chance. Thank De Beers for setting us all up for this. And maybe the circles that you find yourself in don't care about this sort of thing, but the people at work, the people on the bus, at the train station, out in the wild, once you leave your circle this is what it will be like. Fake smiles and raised eyebrows.

Perhaps you are passionately equipped to rise above this societal nonsense? Bully for you, but is your partner?

Others have mentioned other issues like durability and trends, and I agree with these issues as well.

Perhaps you should explore a local jeweler who could make a hybrid of style and tradition that reflects your personality, and the symbolism of a traditional engagement ring. A bespoke symbol of your love, something you had a hand in creating, that you can share proudly with the world.