Shani (Saturn) in Vedic astrology: meaning, signs, gem and mantra

Stands for
discipline, work, service, delay, longevity and justice
Rules
Makara, Kumbha
Exalted in
Tula
Debilitated in
Mesha
Day
Saturday
Colour
black, dark blue
Gem
blue sapphire
Mahadasha
19 years
Nakshatras it rules
Pushya, Anuradha, Uttara Bhadrapada
Mantra
ॐ शनैश्चराय नमः

Help workers and the poor; light a mustard-oil diya under a peepal on Saturdays.

Surya · Chandra · Mangal · Budh · Guru · Shukra · Shani · Rahu · Ketu