Today, the ritual continues, with locket necklaces serving as keepsakes for photos, charms, love letters ... from The Titanic—not exactly the heart-shaped blue diamond necklace that went ...

Send a message truly from the heart, with this engraved heart pendant from Gorjana ... The 18K gold vermeil charm can be customized with up to eight characters, enough to write “Love You ...

Whether you choose to include a picture of a significant other or the locket opens to reveal a personalized engraved message that only you can decipher, they can hold deep sentimental value.

“Words are fleeting these days,” Ms. Levy said, “people don’t write letters, and engraved lockets ... where they selected a heart-shape crystal locket and three charms to go inside ...