The smallest of toroid form with pale patches of leaf green andrusset in the cloudy white matrix; the second of circular form with aconvex exterior and upright interior wall, the matrix of fairly even andcloudy pale green hue; the third of oval form with convex exterior andupright interior, the cloudy white matrix showing patches of amberand pale leaf green.1 13/16, 2 1/8 and 2in (4.5, 5.4 and 5.1cm) interior widths