This fist-sized sphere of crystal is perfectly clear.

A sphere of awakening allows you to silently rouse your allies from slumber, even if magically created. When you activate the sphere, all allies in a 60-foot-radius burst are immediately awakened from sleep (whether mundane or magical in origin). In addition, any fatigue or exhaustion affecting you and those allies immediately ends. Furthermore, you and all affected allies gain immunity to fatigue, exhaustion, and sleep effects for 10 minutes after the sphere is activated.
A sphere of awakening functions once per day.

Prerequisites: Craft Wondrous Item, break enchantment.
Cost to Create: 500 gp (plus 800 gp for base item), 40 XP, 1 day.