Designs in atom-like shapes with small colorful accenting stars set against a white glittery background are featured in this mid-century design from Thomas Glenn Holidays.  The prototype did not go into production,  so only a few samples are available.  
The "Atomic Fusion" Ball Christmas Ornament
Part of the Christmas Past Collection
Handcrafted in Poland
Made from glass
Approximately 4 inches tall (10cm) or 100 mil