Dear Vevek:
You have three planets in the 10th house, Jupiter (yellow sapphire), Ketu (Cat's Eye) and Sun (Ruby). But your Jupiter is combusted by Sun 100%.
Combusted planet's gem will not give results, hence avoid Yellow Sapphire.
10th house planets are suggested to bring auspicious results, hence, I will recommend you to wear Ruby, 1st Choice.
The 2nd choice will be planet in the 11th house, Mercury (Emerald).
Trust my explanation inspire you,
Swami Krsna