The Amethyst Blade Enamel Pin

Known for his iconic amethyst-bladed lightsaber, Master Mace Windu was an incredibly powerful Jedi. His place on the Jedi High Council earned him a great amount of respect for his vast knowledge, calm temperament, and insightful intuition. He was also known to be a master of combat leading many victories as a general during The Clone Wars. Additionally, he inventing the unique fighting style and state of mind called "Vaapad" where the user channels their inner darkness to fuel their dueling. Knowledge of the fighting style was later restricted due to the riskiness of it leading it's practitioners to the dark-side. Some have speculated that's why Master Mace Windu's lightsaber is purple...it's a mix of red and blue...much like his fighting style is a mix of light and dark...
In any case, Mace Windu was a powerful Jedi worthy of immense reverence.