A stone is chosen by a planet’s functional nature for YOUR lagna, not by your sign. Enter your birth details for the stone to wear, the ones never to buy, the cheaper upratna, and what to verify at the jeweller — plus a PDF.
Time of Birth*
Hour:Minute
Exact time gives an accurate Ascendant (Lagna).
Coordinates
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Edit precise coordinates (advanced)
Disclaimer: Readings are for informational and educational use only and should not replace professional advice.
Navagraha Gemstones — Reference Table
This is the general table — which of these suits YOU is what the calculation above answers.
Sun
Ruby (Manik)
Upratna: Red Garnet, Red Spinel, Sunstone
Moon
Pearl (Moti)
Upratna: Moonstone, White Coral
Mars
Red Coral (Moonga)
Upratna: Carnelian, Red Jasper
Mercury
Emerald (Panna)
Upratna: Green Onyx, Peridot, Green Tourmaline
Jupiter
Yellow Sapphire (Pukhraj)
Upratna: Yellow Topaz, Citrine
Venus
Diamond (Heera)
Upratna: White Sapphire, White Zircon, Opal
Saturn
Blue Sapphire (Neelam)
Upratna: Amethyst, Blue Spinel, Lapis Lazuli
Rahu
Hessonite (Gomed)
Upratna: Orange Zircon, Spessartite Garnet
Ketu
Cat’s Eye (Lehsunia)
Upratna: Cat’s Eye Quartz, Tiger’s Eye
Understand This Simply
A Vedic gemstone (ratna) is worn to strengthen one planet that is friendly to your birth chart — so this tool works out from your lagna which stone actually helps you, and just as importantly, which stones to stay away from.
A gemstone is not a magic charm — it makes its planet stronger in your life. That is a blessing for a friendly planet and unhelpful for an unfriendly one, which is why no stone is "lucky" for everyone.
The choice is made from your lagna (ascendant), not from your zodiac sign alone — which is why the same stone can suit one person and not their own sibling.
The "not advised for this lagna" list is the part that protects you at the shop — those stones would strengthen planets that work against your chart, whatever a seller may say.
Devotion does not need an expensive stone — every ratna has a gentler, more affordable upratna (substitute), and the beej mantra japa asks for nothing but your time.
A ratna is worn as a devotional act — in the right metal, on the right finger and day, after the energising (prana-pratishtha) vidhi — never casually as jewellery.
Everyday analogy: A gemstone is like prescription glasses — the pair made for your eyes sharpens your sight, while a friend's costlier pair only strains them. The stone must match YOUR chart, not the fashion.
What to do with this: Before you ever visit a jeweller, note your recommended stone AND the avoid list — the take-to-jeweller PDF is made for exactly that. Begin with the upratna or the mantra if you prefer; and for stones marked "Specialist — only on advice" or any big purchase, take a qualified Jyotishi's confirmation first.
Frequently Asked Questions
How is my lucky gemstone decided in Vedic astrology?
By each planet’s functional nature for your lagna — the houses it rules. A trikona lord’s stone helps you; a dusthana lord’s stone is avoided even if it rules your Moon sign. The tool computes this for all nine planets and says which stones to wear and which never to buy.
What does the gemstone calculator suggest?
Your life stone (lagna lord), lucky stones (5th/9th lords and any yogakaraka), the stones your chart must avoid with the reason, cheaper upratna substitutes, the wearing vidhi with beej mantra, and a checklist of what to verify at the jeweller — with a PDF to carry to the shop.
Should I wear a gemstone without advice?
No — gemstones are powerful, so please consult a qualified astrologer before wearing one.