What is Nisab?
The exemption limit for the payment of zakah. A Muslim who possesses wealth below the nisab is exempted from paying zakah, while a Muslim who possesses wealth at or above this exemption limit is obliged to pay zakah. The nisab differs depending on the type of wealth in question.
The Nisab for Gold (or the minimum requirement for Zakat to be applicable) is 85 grams
The Nisab for Silver (or the minimum requirement for Zakat to be applicable) is 595 grams