Is selling the engagement ring from the dowry set without the suitor's knowledge, and then buying another ring of the same weight, permissible or forbidden?

The Shabka (pre-nuptial gift, often jewelry) is part of the Mahr (dowry) in some countries. It belongs to the suitor and must be returned to him if the engagement is dissolved before the marriage contract, because the fiancée does not own any part of it until after the marriage. Before that, it is merely a loan to her. Therefore, the questioner was not permitted to sell any part of her Shabka without her suitor's permission. However, since she bought back what she sold, she has fulfilled her obligation regarding the guarantee of the loaned item.