One copper electroformed Pecos Diamond on a 24" antique copper ball chain. These brilliant quartz crystals occur in the Permian Seven Rivers Formation along the Pecos River Valley in southeastern New Mexico. Pecos diamonds are said to stabilize unsettled emotions. One way of doing this is by holding them in your hand and rotate or stroke them with the fingers of the same hand. Perfect for men, women, teens and children. Pecos Diamonds measure approximately 1.0”. Size, shape, and color may vary as no two stones are alike.