Chinese Spinach Green Nephrite Jade Dragon Seal. The crouching-form carved from the large, square block of jade beneath, incised with extensive calligraphy on all four sides, the bottom deeply carved with the ceremonial seal, with accompanying square wooden storage box, bearing an inscribed green nephrite jade square plaque on the top. The inscription is one of Confucius quotes, 'If you make a mistake and do not correct it, this is called a mistake, all humans make mistakes, and if corrected and improved, they should not be punished as sinners'. {Height of seal: 4 1/2 inches (11.4 cm)}. Property from a San Francisco Collection.