Pillar article
Gemstones Follow a Graha, Not a Rashifal Column
A gemstone in jyotish is worn for a graha, on the navaratna map: ruby for the Sun, pearl for the Moon, red coral for Mars, emerald for Mercury, yellow sapphire for Jupiter, diamond for Venus, blue sapphire for Saturn, hessonite for Rahu, and cat's eye for Ketu. A rashifal that assigns a stone to a Moon sign is assigning the Moon-lord's stone. That is shubh only when that lord is a functional benefic for the lagna, or is the lagna lord you intend to support. Saturn's blue sapphire on a Makara Moon can be the wrong stone for a lagna where Saturn rules dusthanas.
Functional nature before the jewel
For Vrishabha and Tula lagnas, Saturn rules a kendra and a trikona and is a yoga karaka, so his stone has a classical argument. For Karka lagna Saturn rules the 7th and the 8th, and a blue sapphire bought because the Moon is in Makara strengthens a difficult lord. The Moon's pearl supports the mind, which is a cleaner universal argument, and still does nothing for a marriage lord who is not the Moon. The Sun's ruby follows the lagna lord of Simha, or a weak Sun you have decided to support, not every Sunday rashifal. Weight, finger, and metal are ritual details a jeweller and a priest argue about. They are not calculated by Swiss Ephemeris, and this page does not prescribe a carat.
The period has to match the stone
Wearing Jupiter's yellow sapphire during a Saturn mahadasha of nineteen years is a devotional mismatch unless Jupiter is the antardasha lord or the lagna lord you are supporting on purpose. The antardasha length is the product of the years divided by 120. A stone does not change that length, does not exalt a debilitated graha, and does not cure a disease. No medical result is claimed here. People who feel unwell after a Saturn stone should take it off and, if symptoms continue, see a clinician. The chart experiment is over. The body is not a remedy trial.
Order of decision
Cast the lagna. Name the lord you mean to support. Confirm he is not a dusthana lord you are about to amplify. Then look up the stone on the map above. Jyothish SI will name the lords with Lahiri ayanamsa. A rashifal column will name a stone from the Moon sign in one sentence. Prefer the longer order. Shubh is the right lord, not the brightest advertisement. If you do not know the lagna, do not wear a Saturn or Rahu stone on a column's advice.
Frequently asked questions
Which stone is paired with which graha?
Ruby Sun, pearl Moon, coral Mars, emerald Mercury, yellow sapphire Jupiter, diamond Venus, blue sapphire Saturn, hessonite Rahu, cat's eye Ketu.
When is Saturn's sapphire a considered choice?
When Saturn is a yoga karaka, as for Taurus and Libra lagnas, or is otherwise the lord you mean to support. A Makara Moon alone is not that test.
Can a gem change the dasha?
No. It does not move a graha or shorten its years. If a stone makes you ill, remove it and seek a clinician. No cure is claimed here.
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D1, D9, D10, dashas, yogas, and transits, the same calculations referenced in this article.