Total carat weight is not known. The bracelet contains aquamarines, peridots, amethysts, garnets, citrines. Notice how the center stones are contrasting colors. Very beautiful and striking piece. The oiling of emeralds is an ancient process used to enhance the clarity of the emerald.
Oil is applied to the emerald which seeps into the fissures, which reach the stone's surface.
Along with improving the clarity, this process may prevent brittleness. Oiling is not permanent and may need to be reapplied every few years. Take care not to hit the stone on hard surfaces as this may chip or crack the emerald due to the natural brittleness of the stone. Special care should be taken when cleaning emeralds. Since heating is generally permanent, heated stones do not normally require special care.