Can an engagement ring be white gold or should it be yellow gold?
Go with white gold. Get what she wants. If she wanted purple gold then get her purple gold. There in no ‘norm” when it comes to engagement rings anymore. The sky is the limit these days. However I would make sure you get what she likes, she is going to be the one wearing it for the next 60 years. Congrats by the way, I wish you all the love and happiness.