I Love You Envelope Necklace – Secret Love Letter Envelope Necklace. Our I Love You Envelope Necklace makes a wonderful romantic gift for that special lady in your life. Each time she opens the envelope#44; she?ll be reminded of the love you have for her each and every day. This sterling Sliver Necklace makes a perfect Valentine?s Day or Sweetest Day Gift. This unique Sterling Silver Love Necklace features a smooth sterling silver envelope charm that opens up to reveal a special message inside. The sweetest secret letter in this Personalized Valentine’s Day Jewelry reads? I Love You? Envelope Pendant measures 2/3″ and is laced through an 18″ Silver Box Chain. Imported.