When I was a kiddo, every beetle that had shiny wings was a lightbug. In fact, I had no idea what the actual lightbugs looked like until I was a teenager. If the creature's wings shimmered and reflected light - it surely was a lightbug. So, lightbugs came in many shapes and colors. 
 
Obviously, I couldn't let such impeccable logic go to waste when I was designing the post style earrings to hold the gorgeous colorful stones I recently had an opportunity to snatch. These are quite light (2.2g), but some of us do enjoy extra support that posts provide with large stones.  
 
Responsibly mined in Brazil, hand cut by my colleague in New Mexico. Untreated.