There are ways to determine the age of jewelry, but few are foolproof. The thinness of the metal, the makers marks, the presence of pat. pending indicating pre trademark rules are only guidelines. I've seen old pieces in pristine condition like my 1960's Beau sterling silver and jet pin shown here
and 5 year old abused jewelry ignored until it looked over 100 years old. This is especially true of chains.
The design itself can be a clue, but since things have gone in and out of style repeatedly. So be wary of looks old. The above Beau pin is in an older classic style, but we know Beau jewelry only started in 1947. In this case the mark, gemstone, metal and setting indicate the age. The fact that this had been kept in the original box with the receipt also helped keep it looking pristine.
So if you are just beginning to collect vintage jewelry I urge you to research and learn. Many wonderful pieces are over looked because they look to new. Many newer items are passed off as vintage because it looks old.
