Recycled bottle glass melted into a drop with a crackle finsh.
The crackling is actully the glass fractured on the inside which is achieved by cooling the glass to fast.  
Wrapped in your choice of metal
Stainless steel  which will never tarnish or turn color, or Antiqued Brass 
Finished with a lever back style earwire.
Available colors:
Turquoise from Bombay Sapphire Gin
Crystal Clear from Makers Mark Bourbon  bottles
Cobalt Blue fromSkyy Vodka 
Seafoam from Pinot Grigio Wine 
Teal from Singleton Scotch
Periwinkle from Pinnacle Vodka
Peridot Tanqueray Ten Gin