Saturn is the planet for the Sapphire, Raghu for garnet, Ketu for cats eye, Sukra, for the diamond, the Sun for the ruby, the Moon for the pearl, Guru for the topaz, Budha for the emerald and angaraha for the coral.
Each gem in the mala was given ce5rtain attributes of healing properties, according to ancient lore, and the practice is still in vogue today.
The nine jewels of the necklace are a combination of the different gems and perhaps were originally threaded together to ensure general wellbeing.
Gems should be set by themselves, as certain gems are incompatible and may cause undesired effects if set together in the same piece of jewelry.
Gems also transmit cosmic colors that are in turn absorbed by the chakra centers in the ethereal body and therefore they must be of good quality in clarity.
Gems must not be heat-treated to enhance color or clarity, nor irradiated or treated in any way to improve their appearance.