Including four straight cylindrical-form rings: three with plain surfaces, the fourth carved two ducks swimming in water; the five with a slightly recessed side covered with a layer of russet skin, carved with two figures playing chess under a pine tree; the sixth with a slightly flattened patch, carved into the russet inclusions with a 'xi' character. 1 to 1 1/4in (2.5 to 3.2cm) high, 1 1/8 to 1 1/2in (2.9 to 3.9cm) wide (6).