Double stacked vial cap earrings! One small vial cap color of your choice will sit atop one large vial cap color of good choice! Please choose small vial cap (numbered) color choice & specify corresponding desired large vial cap (alphabetical) color. Earrings are available in silver or gold colored metal earring backing. The earrings must be paired by metal backing silver/gold color, but vial cap colors within them can be matched or unmatched to suit your preferences! Vial caps originally serve a purpose in medicine as a sterile dust cap that covers unopened vials of medication. Vial caps typically are removed & tossed once a medication is opened. Instead of tossing them, I began saving them for repurposing! Each vial cap ring showcases a vial cap that once adorned a real hospital medication. First they got to protect medicines to help patients feel better, & now they get exciting new life by being repurposed into colorful, wearable, & durable jewelry! Listing is for one pair of matched metal with matching/unmatching vial cap inserts with earring backs included. Vial Cap Earrings, Double Stacked