Airgetlám (アガートラーム Agātorāmu?) is the relic formerly owned by Serena Cadenzavna Eve and later by her sister, Maria at the end of G and onwards. On the official website this is called the Silver Symphogear (白銀のシンフォギア Shirogane no Shinfogia?).
In Irish mythology, Nuada or Nuadu (modern spelling: Nuadha), known by the epithet Airgetlám (modern spelling: Airgeatlámh, meaning "silver hand/arm"), was the first king of the Tuatha Dé Danann. He is cognate with the Gaulish and British god Nodens. His Welsh equivalent is Nudd or Lludd Llaw Eraint.
- At the end of Senki Zesshō Symphogear G, Airgetlám was cut in half. However, in GX it was only damaged. This was later corrected in the blu-ray version.
- Even though it typically takes the form of a dagger when it's used, it still seems to be defined as a sword, as Phara's Sword Breaker was able to have an effect on it.