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Gemstone Recommendation Calculator

This tool reads your birth chart and recommends the Vedic gemstone (ratna) that strengthens the weak or functional-benefic planets shaping your life. For each stone it gives the planet it serves, the metal to set it in, the finger to wear it on, a weight range, the day to first wear it, and the mantra to activate it. Recommendations are based on the ruling planets of your chart — the Lagna lord and benefics — not on your birth month.

Birth Details
Gemstones for your chart

How your gemstone is chosen from the chart

In Vedic astrology a gemstone is prescribed to strengthen a specific planet, not chosen by your birth month. The two stones most often recommended are the life stone — the gem of your Lagna (ascendant) lord, which supports overall vitality — and the lucky or benefic stone of a trikona lord (the 5th or 9th house ruler), which supports fortune.

Stones are recommended for planets that are functional benefics but weak or afflicted in your chart, so the gem lifts a planet that already wants to help you. Gems of functional malefics — planets that own difficult houses for your ascendant — are generally avoided, because strengthening them can amplify the harm. This is why the same planet may be beneficial for one ascendant and best left alone for another.

The nine planetary gemstones

  • Sun — Ruby (Manik), gold, ring finger, worn on Sunday.
  • Moon — Pearl (Moti), silver, little finger, worn on Monday.
  • Mars — Red Coral (Moonga), gold or copper, ring finger, worn on Tuesday.
  • Mercury — Emerald (Panna), gold, little finger, worn on Wednesday.
  • Jupiter — Yellow Sapphire (Pukhraj), gold, index finger, worn on Thursday.
  • Venus — Diamond (Heera), silver or platinum, middle finger, worn on Friday.
  • Saturn — Blue Sapphire (Neelam), iron or silver, middle finger, worn on Saturday.
  • Rahu — Hessonite (Gomed), silver, middle finger.
  • Ketu — Cat's Eye (Lahsuniya), silver, ring finger.

How to find your gemstone

  1. Enter birth details: Provide an accurate date, time and place of birth so the ascendant and planetary strengths are computed correctly.
  2. See the recommended stones: The tool names the gemstone (and any alternate) for the planets worth strengthening in your chart.
  3. Note the wearing details: For each stone, read the metal, finger, weight range, wearing day and activating mantra before you wear it.

Frequently asked questions

Which gemstone should I wear?

It depends on your birth chart, not your birth month. The stone is chosen to strengthen your Lagna lord and the functional-benefic planets of your chart — commonly the life stone of the ascendant lord and the lucky stone of a trikona lord. This calculator identifies those planets and names the matching gemstone, finger and day.

How do I wear a gemstone correctly?

Wear it in the prescribed weight range and metal, on the assigned finger, first put on during the ruling planet's day and hora in the Shukla Paksha. Traditionally the ring is washed in raw milk and Ganga water and the planet's mantra is recited before wearing.

Is Blue Sapphire (Neelam) safe to wear?

Neelam, the stone of Saturn, is the fastest-acting gemstone, so it is traditionally trialed for a few days before being worn permanently. It is recommended only when Saturn is a functional benefic for your ascendant; otherwise a gentler alternate like Amethyst is preferred.

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For educational purposes. Astrological interpretations are traditional and not a substitute for professional advice.