I seriously have no idea what this sentence is trying to say.
"is" is implied in the second part of the sentence; it's often done when contrasting two similar statements. This is correct English and presumably correct Romanian, too.
"The jar is Egyptian; the box is Russian"
It depends on the type of exercise - if it is a listening one, then there is only one solution, the one you hear. :o)
Borcanul este egiptean, cutia este rusească