What aspect of the Delta Kappa Epsilon pledge pin's design is unique?

The unique aspect of the design of the Delta Kappa Epsilon pledge pin is that it features the Ghules facing upwards. This design choice holds symbolic significance within the fraternity, representing various values associated with the brotherhood and the ideals of DKE. The position of the Ghules is a distinctive characteristic that sets the pledge pin apart from those of other fraternities and organizations.

In contrast, while other choices mention materials or elements of the pin’s design, such as the Greek letter Sigma, the use of silver, or gold embroidery, these features do not have the same level of symbolic uniqueness as the orientation of the Ghules. The Ghules facing upwards carries a deeper meaning that resonates with the fraternity's principles and traditions.