thanks for writing in. What a lovely set; the cameo depiction appear relatively modern in terms of "antique cameo history" and you mention that no one cameo lady is exactly the same - this is a good sign and indicates to me that this little cameo lovely set are genuine cameo jewelry and not made from composite material.
You might like to visit the page on antique cameo for information on cameo and towards the bottom of that page there are "buying tips" that might provide some indication of what represents "value" in terms of cameo jewelry.
