This interesting ornament from the Christina's World collection of Thomas Glenn Holidays features a black forest set against a clear background.  There is some white glitter applied to the bottom of the ball to give the effect of a snowy forest floor.  
The "Black Forest on Clear"  Ball Ornament
Part of the Christina's World & High Design collections
Handcrafted in Poland
Made from glass
Approximately 5 inches tall (12.7 cm)