10MM Herkimer Quartz Pendant 10MM Herkimer Quartz Pendant from Nathan Burnell 10MM Herkimer Quartz Pendant Herkimer Diamond (clear quartz) that I dug out of the ground in Herkimer, NY. Process of cutting and polishing a 10mm stone. gLike 10MM Herkimer Quartz Pendant Herkimer Diamond (clear quartz) that I dug out of the ground in Herkimer, NY. Process of cutting and polishing a 10mm stone. DIY Share R 7 n Available Freelance, Moonlighting Nathan Burnell Industrial Designer Wallingford, CT Follow Contact