● AI Appraisal Observation (Matches Jadeite A Grade Level) Deep, dark green color, with color unevenness, translucent, light green light transmission, surface luster is close to natural sheen, no ultraviolet fluorescence reaction, slightly cool even in a 24-degree room, no magnetic reaction (ring) Based on the above observations, the possibility of Jadeite A grade is extremely high. ● Weight of the Item Total weight including the ring: 4.2g (see photo) Jadeite size: Length 1.8cm, Width 1.3cm, Thickness: 3mm → 7.2 cm³ Actual volume: Oval shape = approximately 65% = 4.5 cm³ Weight estimation: 0.45 × 3.3 = approximately 1.485g ● Carat Conversion 1g = 5ct → approximately 1.485g × 5ct = approximately 7.425 carats Weight including the ring: 4.2g Weight of the ring: 4.2g - 1.485g = 2.715g ● Ring Material: K18 contains copper, so reddishness may appear on the back and joints (see photo). The worn parts of the ring are also gold, so the possibility of gold (K18) is high. ● Regarding the Production Period of This Item The seller has owned it since at least the 1960s, making it vintage. There is no formal appraisal certificate. The photos and descriptions are all there is, so please examine them carefully before purchasing.