As a start, I would like to say that if your intent is to cast 'a love spell' to this person, is not a great idea.
Having said that, yes, the 'right' crystal would help boost the intent of the spell you are casting.
The love is already there, the courage the other person needs is lacking. I believe the crystal that they may carry will give them the courage to what needs to be done. thank you for replying. I have a rose quartz that changed from pink to orange when I was doing a spell for this person, I believe that it should be the one I send. Though since it has much magick, wondering if I should keep it.