Jupiter rules 9th and 12th house is in 3rd house in Gemini

Jupiter is a highly benevolent planet in Vedic astrology, and when it is placed in the third house of Gemini sign, it can have significant effects on the native's communication skills, intellect, and spirituality.

Firstly, this placement tends to make the native highly intellectual and curious, which makes them very good at grasping and analyzing new ideas and concepts. They tend to be great communicators and are inspiring speakers, writers, and orators. The native tends to have a natural talent for languages and can be drawn to careers that involve writing, journalism, teaching or public speaking.

Additionally, Jupiter in the third house also indicates a positive relationship with siblings, relatives and neighbors. The native tends to be communicative with them and maintain a harmonious relationship.

Jupiter is also a planet associated with spirituality, and when it is placed in the Gemini sign, the native tends to seek knowledge and wisdom through diverse sources. The native may have a keen interest in religious or philosophical debates, which helps them develop a broader perspective on life.

Overall, Jupiter in the third house in Gemini sign can bring intellectual brilliance and philosophical depth into the native's life, provided the other aspects of the horoscope are supportive.