There is nothing wrong if men wear silver in Islam. The Prophet (peace and blessings of Allah be upon him) had a ring of silver and his Companions wore rings. It is not permissible for men to wear chains.

If a woman wears coloured cosmetic contact lenses for her husband, there is nothing wrong with it. But if she is wearing coloured contact lenses where others will see her, then this should not cause any fitnah or temptation. Also, there is nothing wrong with wearing ophthalmic contact lenses on the advice of specialists

It is not permissible for men, just as it is not permissible for women, to trim their eyebrows.

If the percentage of alcohol in perfume is low, there is no need to worry about using it, but if it is high, then it is better to avoid it unless it is for a need, such as sterilizing wounds and the like.

Men can wear rings made of platinum as long as it is not an extravagance on the part of one who cannot afford to wear this kind of jewellery and it should not cause any kind of fitnah.