Looking for Answers about Dicksons Reunion Heart II Pendant, Sterling Silver?

Sterling silver heart pendant features a tear-shaped "missing piece." Includes 18" chain. Gift boxed with poem.

Since heaven has become your home
I sometimes feel I'm so alone;
And though we now are far apart
You hold a big piece of my heart.
I never knew how much I'd grieve
When it was time for you to leave,
Or just how much my heart would ache
From that one fragment you would take.
God lets this tender hole remain
Reminding me we'll meet again,
And one day all the pain will cease
When he restores this missing piece.
He'll turn to joy my every tear
And when I wear this necklace near
It will become my special way
To treasure our reunion day