The herkimer "diamonds" used in these earrings are beautifully polished, with some inclusions, and measure approximately 0.25" x 0.5".  "Herkimer diamonds" are not diamonds - they're quartz crystals of exceptional clarity, discovered around Herkimer County in New York.  We set them in sterling silver with sterling silver posts, butterfly earring "nuts" are included.  Each pair of earrings will differ slightly, since all stones are one of a kind.