When Adrian observed the twin daggers, both of them have different auras and appearances. Castor is made up from a metal that is gold in color with runes scribbled in them. The actual dagger is curved while being adorned with light colored gems. The most eye-catching part of the dagger is that it is glowing in a white hazy aura.
Pollux is different compared to Castor as it is made from a metal that is silver in color. The dagger is also riddled with runes but is adorned with dark colored gems. The hazy aura around it is also golden orange in color which makes the two daggers compliment each other in color. Just holding the two daggers together already increases the aura of the wielder.
