Permissible and impermissible items of trade

Q: I want to sell gems and precious stones. Kindly advise if it is ok to sell in Islam.

Q: I'm doing business of non alcoholic perfumes and Attars. The fragrances, which I sell come from a company in india (total hindus), keva fragrances. This company also uses synthetic animal derivatives such as civet oil, etc. in their perfume oils. They said, we can give halal declaration of any product, but did not show any halal certification. 

Secondly, this company is partly owned by blackstone, a giant company of USA, which deals in real estate, credit, equity, etc. involving interest as well. My question is that whether it is preferable to sell their products to earn, as they are strict Hindus and might be involved directly or indirectly in interest also. Secondly, the use of synthetic animal derivatives in fragrances are halal to use and sell?

Q: Is it permissible for a Muslim the trading of non-halaal goat and beef meat (animal is not slaughtered the halaal way), from a non-Muslim trader to non-muslim buyers?

Q: I am retailing make up and have an item in stock which is a lipstick that contains alcohol. Is it permissible to sell or use?

Q: Is share trading (equity, commodity, derivative, currency) permissible in Islam?

Q: Is it allowed to do business (buy and sell) of...

1. Toys like dolls, soft toys, superhero statues, stickers and pictures of animals, etc.

2. Board games like carrom, snake and ladders, Ludington, etc.

Q: I would like to know that in the Hanafi madhab, eating of lobster is not allowed. So is it permissible for a hanafi to trade (buy and sell) lobster?

Q: My husband's grandmother's only source of income is earned from selling movies and videos. Will it be permissible to eat at her house? Her income is not from a halaal source and not eating there will break family ties. Please advise.

Q: I would like to know if there is any ruling regarding a Muslim breeding and selling snakes and spiders. It it allowed in Islam?

Q: Is it permissible for a Muslim to sell clothing made from pig skin e.g. gloves, shoes, etc.? Will there be any difference in the ruling if these items are used as safety equipment/wear?