Praise be to Allah, The Lord of the Worlds.
The majority of the Muslim scholars are agreed that Zakah isn`t due on jewelry used as ornaments of a woman. We have already explained this in Fatwa No. (
525).
However, it doesn`t avail to pay the Zakah of someone else`s jewelry-in order to be on the safe side of Sharia-without asking their permission and intention to do so because Zakah is an act of worship; thus, intention is a must.
An-Nawawi (May Allah be pleased with him) said: "Our fellow scholars said: "The Muslim scholars are agreed that paying Zakatul Fitr on behalf of a non-dependent without their permission doesn`t avail because Zakah is an act of worship for which a responsible person remains liable if paid without their permission." {Al-Majmou`, vol.6/pp.100}. And Allah The Almighty Knows Best.