Ruling on Family Heirloom Jewelry After Divorce

Assalam o Alaikum Wa Rahmatullah e Wa Barakatuhu I hope that you are well. I am writing to obtain a fatwa on a divorce matter. Please let me know if there is a fee or any charges to obtain one. My issue is that my parents, on my wedding day, gave family heirloom jewelry to my wife, and later on the jewelry was stored in my mother’s closet. My mother continued to consider the jewelry as a family heirloom and never stopped paying zakat on it. She never explicitly mentioned to me that ‘son I am giving this to you for your wife.’ So I never paid the zakat on it. I did not pay for the jewelry. Now after the divorce am, I expected to give that jewelry to my ex-wife? The gifts that I personally purchased for her with my salary and my funds, I have not asked for them. But these are family heirlooms which I never paid for and neither did I consider them to be mine. They have always been owned by my grandmother and my mother, and I actually wasn’t even aware that she had given it to my wife on wedding day. What should I do? JazakAllah Khairan Wassalam!