Kazan Mother of God (Theotokos). Russian Orthodox Icon.

Sizes: 

#25 - S (2½" x 3" on ½" wood). 
#518 - M (3½" x 4" on ⅝" wood).  

Icons manufactured by a Russian supplier using their proprietary process of applying successive layers of color and metallic-like patterns resulting in a brilliant, detailed, and nearly three dimensional appearance.

Icon inscriptions in Church Slavonic.