Antique English 18K Yellow Gold Hand-Carved Lapis Lazuli Signet Ring With Mythological Beast Intaglio

Antique English 18K yellow gold signet ring set with a hand-carved lapis lazuli tablet depicting a mythological beast — possibly a dragon or sea creature — rising from stylized waves, rendered in intaglio relief against the deep blue stone. The shield-shaped bezel measures 14 mm at its widest point. The band carries multiple English hallmarks inside, including purity, assay city, and maker's marks. The band shows evidence of a prior resizing. Total weight is 9.91 g. Ring size 6. Very good used condition, original as a collector would expect.