What is the criterion for determining the zakat pot for jewelry: Is it based on the purchase price or the price at which zakat becomes due, and is the calculated price the purchase price or the selling price, and is the purchase price for used or new gold?

According to some scholars, zakat is obligatory on jewelry intended for adornment if it reaches the nisab. However, the majority of scholars hold that there is no zakat due on it. It is preferable to pay zakat on it as a precautionary measure. Zakat is calculated by determining its weight and valuing it at its selling price at the time zakat becomes due. Then, one-quarter of one-tenth (2.5%) of its value is to be given. The nisab for gold is approximately 85 grams.