Translation of "Necklace" in Chinese

My grandma gave me this necklace.

这条项链是我奶奶送给我的。

Tom found Mary's necklace under the sofa.

在沙发下，汤姆找到了玛丽的项链。

Mademoiselle, would you like a platinum necklace to accompany your ring?

小姐已经有一个戒指，要不要配一条铂金项链？

I still cherish the necklace you gave me ten years ago.

我至今还珍惜你十年前给我的项链。