Wearing A Family Heirloom
If you are choosing a family heirloom for the wedding, make sure that it really fits your dress. Although you would want to honor your family by showcasing a bridal jewelry by the family, it would still be important to realize if it would really match the dress and your entire ensemble.
In the case that your jewelry does not match perfectly with the dress, do not try to wear it. Even if you want to wear it, but it would really throw the balance away from the dress, then just consider in wearing your jewelry on some other pre-wedding occasions that you will have for the wedding.
Your family will understand if you cannot wear it and wear it in other occasion. You can use a different custom bridal jewelry for the wedding instead and you will really be beautiful.