I own a locket that my great grandmother gave me before she passed away. It's one of my most treasured possessions, and I'm reminded of her every time I wear it. I also have an unusual, Chinese turquoise pendant I bought for myself on my 30th birthday; I feel very connected to it and to what it represents for me.
Whether or not it's a family heirloom, jewelry often carries or accumulates great symbolic importance. Do tell us which pieces feel sentimental, invaluable or meaningful to you, and please tell us why!