925 is the stamp for sterling silver.
WhAt does a pendant stamped NVC mean
Vargas
It was made in China... obiviously
This may be an identifier of the setting stamped there by the manufacturer.
Not enhanced in terms of pearls
What does r1 14k
More than likely, the 12 stamped in your ring means that it is 12 karat gold.
What does it mean
Heavy Gold Filled..
It could mean gold electroplated with 10K gold. And, if the band is plated, the stone is not a diamond.
82.5% gold /silver what ever the metal is
CN stamped on the inside of a ring likely stands for "China," indicating that the ring was manufactured in China. It is a common practice for jewelry makers to mark their products with the country of origin.