Mr. Tarun
Your Moon is at 3°41’41” in Taurus, where as your 8th cusp has fallen in Taurus at 15°45’45”. So as the degrees are less than the 8th cusp, it is deemed to be in 7th house. There is no harm with this.
Your lagna is at 16°33’32” in Libra. Your lagna sub lord is Venus. Venus is signifying 10th house and 11th house. It is the best feature in your chart. You are the luckiest person. You will have reputation and all round success in your life. So there is no need for wearing a gem stone. Even if you want to wear a gemstone I suggest you to wear the coloured clothes pertaining to the specific planet and observe. If it is good, then go for the gem stone.
Jupiter is signifying 10th house and 11th house. So Topaz studded in gold should be put on the ring finger on any thursday after performing puja to Lord Lakshmi Narasimha. Then wear the ring and take the teerdham in the temple.
Good Luck
JVS Rao (KP follower)