Gemstone Calculator — Which Stone Should You Wear?
Your life, benefic and lucky stones from the lagna and its 1st, 5th and 9th lords, the method astrologers actually use, with the stones to avoid and why, and finger, metal, day, weight and mantra for each. Nothing is sold here.
- Lagna method, not just rashi
- Avoid list with reasons
- Finger · metal · day · weight
In short
Last reviewed 23 August 2026 · Method: Lahiri ayanamsa, VSOP87/ELP positions · how we verify
What the calculator shows
Your life stone (lagna lord), benefic stone (5th lord) and lucky stone (9th lord), each with the planet and house behind it and the traditional finger, metal, day, weight, substitutes and mantra; an avoid list (the gems of your 6th, 8th, 12th, 2nd and 7th lords) with the reason for each; the enemy-stone pairs for your life stone; and the Moon-sign “rashi ratna”, labelled, with a line on whether it agrees with the lagna method for you.
Why the lagna, not the rashi
A gemstone is held to strengthen its planet. Whether that is good for you depends entirely on what the planet does in your chart, and that is set by the lagna: the same Saturn rules the 9th and 10th for a Taurus lagna (a yogakaraka) and the 6th and 7th for a Leo lagna (a maraka). A Moon-sign chart cannot see that. This is why careful practitioners distrust Moon-sign gem charts: not because the stones are dangerous in themselves, but because the method ignores the one thing that matters.
Before you spend
The claims for gemstones are traditional, not tested, and the market is full of treated and synthetic stones and of people who will frighten you into buying. If you choose to wear one: start with the life stone; buy certified and untreated; never combine enemy stones; and prefer the stone of a benefic planet whose dasha is running. Ask the AI astrologer if you want a second opinion; it has no commission to earn.
How this calculator works
- Chart
- Full kundli (VSOP87/ELP, Lahiri ayanamsa, whole-sign houses).
- Recommend
- Gems of the lords of the 1st (life), 5th (benefic) and 9th (lucky) houses; a planet ruling two of these appears once.
- Avoid
- Gems of the lords of the 6th, 8th, 12th (dusthanas) and 2nd, 7th (marakas) — unless that planet is also a recommended lord.
- Wearing
- Conventional finger, metal, day, weight and mantra per planet; enemy pairs from the classical planetary friendships.
The same engine casts the full janam kundli, so results here and there always agree. How we check the maths →
The nine gemstones and how they are worn
| Planet | Gem (Hindi) | Finger | Metal | Day | Weight | Substitutes |
|---|---|---|---|---|---|---|
| Sun | Ruby (Manik) | Ring finger | Gold or copper | Sunday morning | 3–5 ratti | Red garnet, red spinel |
| Moon | Pearl (Moti) | Little finger | Silver | Monday evening | 4–6 ratti | Moonstone |
| Mars | Red coral (Moonga) | Ring finger | Gold or copper | Tuesday morning | 5–9 ratti | Carnelian |
| Mercury | Emerald (Panna) | Little finger | Gold | Wednesday morning | 3–6 ratti | Peridot, green tourmaline |
| Jupiter | Yellow sapphire (Pukhraj) | Index finger | Gold | Thursday morning | 3–7 ratti | Yellow topaz, citrine |
| Venus | Diamond (Heera) | Middle or ring finger | Platinum, silver or gold | Friday morning | Diamond ½–1 carat; white sapphire 3–5 ratti | White sapphire, opal, zircon |
| Saturn | Blue sapphire (Neelam) | Middle finger | Silver or panchdhatu | Saturday evening | 3–6 ratti | Amethyst, iolite, blue spinel |
| Rahu | Hessonite (Gomed) | Middle finger | Silver or panchdhatu | Saturday evening | 5–7 ratti | Orange zircon |
| Ketu | Cat's eye (Lehsunia) | Middle finger | Silver or panchdhatu | Tuesday or Thursday | 3–7 ratti | Tiger's eye (weak) |
Gemstones — questions people ask
Lagna vs rashi, which finger and metal, what to avoid, and whether any of it works.
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- Nakshatra CalculatorFind your janma nakshatra (birth star), its pada and lord.Open calculator
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- Lagna (Ascendant) CalculatorYour rising sign and its exact degree, from birth time and place.Open calculator
- Sun Sign CalculatorYour sidereal (Vedic) Sun sign — and why it may differ from your Western one.Open calculator
- Rashi by NameFind the rashi that matches the first syllable of a name.Open calculator
- All calculators →
See it in your full kundli
Every placement, your running dasha and the doshas that apply — free, no sign-up. Then ask the AI what it means for you.