One of the clearest natural quartz is the famous twinned quartz from Herkimer county in New York State. Called "Herkimer Diamonds" for their exceptional quality and clarity, a new theory sheds light on these beautiful specimens - they were formed more than 500 million years ago through the work of Radiolaria - living organisms! It is therefore an amazing thing that these are biogenic gemstones!!!
Dimensions: 31mm widest point