Item: Vintage Mexican Sterling Silver Blue Stone Pendant. It's testing as Aquamarine, but I'm sure this is lab created if that's the case. The chain and display box are not included in the sale of the pendant.
 
Measurements: 7/8th of an inch long. It weighs 3.90 grams. The stone measures 9.5mm across.
 
Condition: Vintage, previously owned. There is no damage to note. There may only be minor signs of age/use/patina.