Vintage 18K White Gold Diamond J Signet Ring

Vintage 18K white gold signet ring featuring an oval black onyx, adorned with a white diamond set "J" initial.
The ring is sizable, offering a bright polish finish.
6 round brilliant cut diamonds: 0.06 ct. Color: G-H, Clarity: SI1-SI2
Measurements:
Front: 17.0 mm H x 13 mm W x 4.5 mm D
Band: 4.5 mm W
Weight: 6.5 g
Size: 6.5 (sizable)
Electronically tested for 18K gold.