Gump’s, United States. One 21st century Type A jadeite jade oval cabochon ring mounted in eighteen karat yellow gold. The cabochon has a slightly bluish green hue, light tone, and moderate saturation, weighing approximately 37.6 carats. Impressed maker’s mark Gump’s along the inner shank. Impressed hallmark “18K” along the inner shank. Mason Kay Authenticity Report # 201102-1938.

Cabochon Length: 24.5 mm x width: 18 mm x depth: 11.1 mm; Size 7.75 US
Gross Weight: 12.4 dwt.