This is my
The 25409 is most likely the design number, and the 750 means that the ring is 18K gold.
750 means 750/1000 = 75% gold, which is 18carat
It means that the ring is made of 18K gold.
It means it's 18K.
750 denotes 18ct gold
it means 18ct. or 750 parts per 1000 of pure gold.
it is 18 karat
the PG stands for Plated Gold - meaning the ring is not pure 14kt gold but made of another metal overlayed with 14kt gold
what i know is 750 means 18k gold its 75% gold
that might be the jeweler who made the peice brand
Items marked 18K or 750 have 750 parts gold out of 1000, or 75% pure gold.