Right Ring weight:      6.2 grams   Stone Size; 1.5cm round   Adjustable to sizes  N , O 

Middle Ring weight;   5.4 grams   Stone size:1.2cm round     Adjustable to sizes O,  P 

Left Ring weight;        5.2 grams   Stone sizei.3cm round       Adjustable to sizes M, N 

All the stones exhibit  a lovely play of blue colour  called adularescence, twinkling in the light.