Fill in the blank (_) in the following sentence from the following choices.
Sentence: The woman believed the ruby was more valuable than the emerald, because the _ looked real.

Choice 1: The woman believed the ruby was more valuable than the emerald, because the ruby looked real.
Choice 2: The woman believed the ruby was more valuable than the emerald, because the emerald looked real.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1. The woman believed the ruby was more valuable than the emerald, because the ruby looked real.