I think that is a great idea! Abalone pearls are tough and can be worn all of the time snorkeling surfing etc.The value depends on what the other side looks like. Less if it is dark, more if it is bright. 1.5 grams could be worth from $30. and up depending on the color and surface. Finding one is such a precious thing. It will never be worth it to let it go. It will be the pearl that got away, not the pearl you have.
You are lucky and I hope you find more.