The Silver Shiva Amulet is the thirty-third treasure that can be found in Uncharted 2: Among Thieves.
The Silver Shiva Amulet is found in Chapter 7 - They're Coming With Us . Once you're in the awesome-looking courtyard in front of the temple you've been running around the city to find, don't dash wantonly toward the grand entrance to the structure, for you will catalyze a chapter-ending cutscene. Instead, explore the courtyard, because that's where this treasure is located. More specifically, with your back facing the way you came in, you should search the left side of the courtyard. You're seeking out a little open-air trailer. Simply hoist yourself into the bed of the small trailer, and you can claim your treasure easily enough.