If planets are weak in your kundli, wearing the right gemstone can help strengthen their positive influence. Each planet governs specific areas of life such as career, health, finances, and relationships. A weak Jupiter may require Yellow Sapphire for wisdom and growth, while a weak Saturn is often balanced with Blue Sapphire or Amethyst under expert guidance. Similarly, Ruby supports the Sun, Emerald strengthens Mercury, Pearl calms the Moon, Coral empowers Mars, and Cat’s Eye or Gomedh is used for Ketu and Rahu. Always consult an experienced astrologer before wearing any gemstone to avoid negative effects.