Engagement ring for my lady so our dreams can come true

I really want to propose to my girlfriend just before or soon after her birthday which is this December, however, it’s her 30th so its going to be a blowout and I really don’t have the funds to set aside for an engagement ring too. If a 1000 persons were just to donate a £1 each then that would make my life! I know she’s the one and we’ve talked about marriage in the past and I know that she thinks I’m the the one too. I know she wants to be married before she’s 31 and I really want to marry her so getting married now means it would fit into our sort of unofficial timescales. I know what ring to get I just don’t have the cash basically and I don’t know how long it would take me to save up! Who says romance is dead. X