Is Zakat obligatory on the full amount of gold (100 grams) if the nisab (85 grams) was completed with the last purchased quantity, which has not yet had a full year pass over it?

The wife's gold is her property, and she is responsible for its zakat. Regarding money, its zakat year (hawl) begins when it reaches the nisab (threshold). If Ramadan arrives and the total of gold, money, or trade goods reaches the nisab, then zakat becomes obligatory, and one-quarter of a tenth (2.5%) should be given. However, if the gold did not reach the nisab until a new amount was added, then the hawl begins from the time the nisab was completed. As for permissible jewelry, zakat is not obligatory on it, according to the more preponderant opinion.