Herkimer Quartz Drop Earrings measure 5.5cm in length. Found in and around Herkimer County, NY and the Mohawk River Valley, these double-terminated quartz crystals are believed to possess powerful healing properties. The Herkimer diamonds ranging in size from 10x5-13x6mm are professionally crafted with sterling silver in Manchester. To preserve optimal quality, please keep the item dry and handle with care. Should you have any further queries, contact the merchant.