Made by Swank. I don't know if the pearl is real.
Vintage Swank Tie Tac/Tie Pin Gold Toned 2 Inches with Chain
2-1/16" Alternating Patterns Thin Design Gold Tone Vintage SWANK Tie Bar Clip
2-5/16" Yellow Cabochon Vintage SWANK Tie Bar Clip plain simple quality
Vintage Swank Tie Bar Clip Silver Tone 2.25" Inches
2-3/16" Yellow Cabochon Gold Tone Vintage SWANK Tie Bar Clip simple design
2-3/16" Blue Cabochon Gold Tone Design Vintage SWANK Tie Bar Clip