Vintage 18K Gold Onyx & Diamond Large Signet Ring

Vintage large hand crafted signet ring in 18K white and yellow gold. The intricate detailing includes a bold, ornate monogram adorned with diamonds set on top of a square cut black onyx, supported by a hand engraved side gallery and scalloped graduating shoulders.
Diamonds: 0.22 carats. Clarity: VS2-SI1, Color: F-G.
Measurements:
Front: 26.0 mm W x 21 mm H
Band: 7.5 mm
Weight: 31.5 grams
Size: 9.25 (sizable)
Electronically tested for 18K gold.