Found ring with a metal detector in my Aunt's yard..

[pradamatic]

She told me she had lost it years ago and could never find it. 14k plum gold - Anyone know what the GJ mark is? Stone looks pitch black. Onyx and diamonds? Any info is greatly appreciated. 

[wandas_attic_treasures]

I believe the 14KP means gold plate.

[pradamatic]

The P stands for plumb, meaning it's actually solid 14k where some things labled 14k may actually be 35.5k.

http://www.ebay.com/gds/The-mark-inside-the-ring-is-14KP-thats-solid-gold-/10000000005729330/g.html

[oldasdirt2012]

The ring is probably everything you described in the beginning. The plumb marks (most) 1920s - 1940s  Just a guess black Onyx with Diamonds, deco. The cut of the Diamonds will give off a clue as well, the smaller the table top (flat part of stone ) the older the cut. Unless they are mine cut.