Jambu biji or batu jambu, known as guava, is a kind of jambu fruit that is not too juicy. [Note:  another kind of jambu, called jambu air, or "rose apple" in English, is quite juicy.] The flesh of the fruit is either red or white in color. The jambu's skin is green in color.  The form of the jambu biji is usually roundish.  A lot of tiny seeds can be found in the core.