Herkimer Diamond: Higher Consciousness, Healing, Amplifying Herkimer Diamonds are actually a high vibration quartz, so named because of their naturally-formed double-terminated shape and because they are mined n the Herkimer County region in New York. They are generally very clear, even when inclusions are present. Energetically, they have the same amplifying, healing and spiritual benefits as Quartz Crystal, elevated and concentrated because of the double-termination. As a stone of attunement, Herkimers enhance interpersonal connections and can keep people close, despite physical distance. They are also useful allies in seeding, remembering and interpreting dreams. Each piece measures approximately: Offering A: 7mm -to- 12mm x 6mm -to- 10mm Offering B: 9mm -to- 13mm x 7mm -to- 11mm Offering C: 13mm -to- 17mm x 9mm -to- 12mm Offering D: 14mm -to- 16mm x 10mm -to- 11mm Photos are representative of the color and quality of the stones. Each piece is naturally unique and sold separately. We work intuitively to select the one intended for you.