Star Wars Ashoka LightSaber Engagement Ring
This Ahsoka Lightsaber Ring is for true Jedi fans. In the years before the Battle of Yavin, Ahsoka Tano used two white lightsabers as her personal weapons. These lightsabers, which were white in color and had somewhat curving hilts, replaced the lightsabers she previously used before leaving the Jedi Order during the Clone Wars and were wielded in the unorthodox reverse-grip of her preferred Shien style.
I have based an entire line of Ahsoka Lightsaber Ring on these lightsabres, but any of them can be custom made to fit your tastes.