A James I child's ring

A James I child's ring, the gold ring mounted with a rectangular light yellow stone, probably sapphire, the under bezel quartered with red, white, green and black enamel, the shank with a line of blue enamel and gold foliate motifs, white enamel border and red enamel quatrefoil to the base, the shank interior with green enamel leaf decoration to the upper section, some damage to the enamel, 1.5cm wide.