[Navneet Khanna]

You may recite Brihaspati Mantra for debilitated Jupiter.

“Om Graam Greem Graum Sah Brihaspati namaha” 108 times times

No Gemstone cannot be worn for debilitated planet. Puja , path is to be considered for strengthening of debilitated planets.

Blessings,

Navneet Khanna