Give away your heart, or wear this and give away the key. However you wish to mix it up, this pendant stands out, whether alone or in duo with it's perfectly fitting key.
Perfectly Fitting Key: https://www.shapeways.com/product/7ML578RZ9/heart-key-pendant?li=more-from-shop&optionId=40437212
*Due to slight variations in prints, very light sanding may be need on key.