Stunning, unique Herkimer Diamond, Tanzanite & Silver Necklance. Herkimer Diamond and Tanzanite are two gemstones that are each only found in one place in the world. The Herkimer Diamond at Herkimer in New York, USA. Tanzanite is only found in the East African State of Tanzania. This superb necklace has 3 strands that are gently … Continue reading Herkimer Diamond and Tanzanite Necklace