A monogram necklace has one or several initials. The classic monogram has three letters, each representing the first, middle, and last name. Modern monogram necklaces often have a single letter that represents a person or pet. Monogram pendant necklaces feature small tags engraved with your initials or the initials of a loved one. Add extra tags to your necklace for each member of your family or each of your pets. For a friend group gift that’s one of a kind, a monogram tag necklace that features the first letter of each of your names will tie you all together, even when you’re apart.