Mica Plate (Gin-yo)
This is used for heating wood chips or kneaded incense over charcoal in an ash-filled ceramic bowl, in a portable wood chip heater, or on an electric wood-chip heater.
A mica plate (Gin-yo) is made of genuine mica-stone for the maximum heat resistance.
Gin-yo means a "silvery leaf".
Size : 3/4" x 3/4"
Also see Shoyeido Mica Plate