Silver

History
This Clue is found in the Rosetta Stone translation book located inside the Ekaterina Stronghold.

Card Combo
This clue can be unlocked in Mission 8: The Desert Sabotage and by the following card combo:


 * Card 170: T.E. Lawrence
 * Card 171: Egyptian Desert
 * Card 172: British Museum
 * Card 173: Rosetta Stone
 * Card 180: Napoleon Bonaparte

People with this Clue
Dan and Amy Cahill

Alistair Oh

Isabel Kabra (formerly)

Cutscene
In the Ekat stronghold, the camera avoids the lasers, until it closes on the translation book. The word SILVER then pops up from the book.

About
Silver is a metal. It's commonly used in jewerly, conductors, and currency coins, but it's also the second highest alchemical element.

Silver is a very ductile and malleable (slightly harder than gold) monovalent coinage metal with a brilliant white metallic luster that can take a high degree of polish.