This week I prepare great minerals for You. A stunning natural Herkimer diamond on matrix, the legendary double-terminated quartz crystal known for it exceptional clarity and brilliance. Sourced directly from the Ace of Diamonds Mine in Middleville, New York, each crystal exhibits the unique sparkle and precision form that made these quartz gems world-famous. condition as on pictures. Color is very difficult to reproduce in the pictures. Some pictured specimens show slightly different shades that seen with a human eye. Generally in my opinion the colors in reality are slightly prettier.