Blue Sapphire or Neelam stone (gemstone for Saturn), a hard task master is either beneficial or malefic. It is also controller of longevity. It is a secretive planet and is also known as planet of limitations, restrictions and of superlative nature.
If good in one’s horoscope then the native will be careful, strong, profound, austere, laborious, and envious. Benefic Saturn will make native disciplined and he will have mental and moral courage, foresight and will have a high order thinker. One will have good intuitive power. A person having benefic Saturn will exercise prudence in expenditures against income. He will be reserved, precise, persistent, cautious, provident, industrious and responsible.
On the other hand if Saturn is negative or malefic then one could be deceitful, melancholic, avarious, lazy, lethargic and skeptical. He will suffer obstacles, hindrance in his endeavors in all his endeavors. He will become diffident, distrustful, pessimistic, and unreliable and could be patient of depression. He could have wicked friends too.
In conjunction with other planets like sun one can suffer loss of power, differences in married life, loss of finance, loss in authority and disfavor from government and officers. He will remain unsettled profession and face many ups and downs in his life.
Saturn if malefic can cause problems in teeth, bones, feet, knees, ribs, hairs, nails and secretive system. Diseases given by Saturn are generally chronic like paralyses, gout, insanity, rheumatism, consumption, bronchitis etc.
A cracked gem may attract accidents. A stone with a depression may cause ulcers or boils. If a stone is two-colored, there may be trouble from an enemy. If it is marked with white lines, it may cause eye troubles. If it has red dots, it can cause poverty. A milky stone may cause poverty. If it is dull or opaque, it may cause family problems.