Here are some other Latin words that could be used depending on the context:
* carus (dear, beloved)
* dilectus (beloved, cherished)
* magnificus (splendid, magnificent)
* summus (highest, supreme)
For example, you could say:
* "Gemma pretiosa" (a precious gem)
* "Liber carus" (a dear book)
* "Amica dilecta" (a beloved friend)