Setting
Antique engagement rings usually have settings that are made of precious metal.
Cut
Antique engagement rings are usually cut differently than modern engagement rings.
Shape
Most antique engagement rings are shaped differently than modern engagement rings are.
Carat Weight
Most antique engagement rings weigh less than modern engagement rings.
Fluorescence
Antique engagement rings do not fluoresce.
Value
Antique engagement rings often have higher values than modern engagement rings.