Is zakat due on the entire quantity of gold owned, or only on the increase after the original nisab has been reached?

The wife must pay zakat on gold designated for savings or rental once a full Hijri year has passed on it. Any gold purchased during the year will have its hawl (one-year period for zakat) calculated from its date of purchase. As for jewelry intended for personal use, there is a difference of opinion. The majority of scholars do not obligate zakat on it, while Abu Hanifa and others do obligate it, which is the more cautious approach. If the gold is intended for trade, zakat is due on it when a full hawl has passed on the original capital used to purchase it.