Lost delicate silver engagement ring with a deep blue sapphire and small diamonds in the Farmington mall parking lot.

I lost my fiancé's engagement ring in the parking lot of the Farmington mall. It's a delicate silver band with a deep blue sapphire in the center surrounded by small diamonds. I last remember having it when I was on my way to the car after shopping. I'm really hoping someone might have found it because it's very special to us.