Typifying the finest development of manhood, the selection of Apollo is most appropriate. The official membership badge, made of either white or Roman gold and adorned with three white pearls, is by far the most important item of TKE insignia in general use. Only this badge may be worn by undergraduate members. Jeweled badges, crown set with pearls, diamonds, rubies or emeralds, according to choice, may be worn by alumni members. Frequently the standard membership badge is used as a token of engagement.
Miniature badges are also available for mothers, sisters, or for engagement purposes.
The TKE 'badge of gold', unique in its design and distinctiveness, has never been changed since its adoption. The meaning and connotations of the badge are revealed to members during initiation. The primary symbol of the fraternity is the equilateral triangle. Equal-sided, representing the striving toward a full and equal development of mind, body, and heart, it means much within ranks of our fraternity. It serves as a reminder, too, of the early days of the fraternity and the traditions established by it's founders, since the first three chapters of Tau Kappa Epsilon, which supplied the foundations for its growth, formed an equilateral triangle in their geographical relationship.