What is a Herkimer Diamond? Natural Crystal Guide

Herkimer diamonds are not actually diamonds—they're a special type of double-terminated quartz crystal found mainly in Herkimer County. These naturally formed quartz crystals are known for their clarity, unique shape, and organic beauty—making them perfect for alternative and nature-inspired jewelry.

1. Naturally double-terminated
They form with points on both ends (instead of one), which is rare in crystals.

2. Exceptional clarity
Many are super clear—almost glass-like—giving them that "diamond" look.

3. No cutting needed
Unlike traditional gemstones, they come out of the earth already faceted by nature.

4. Unique inclusions
Some contain tiny bubbles, black carbon, or even water inclusions—making each one one-of-a-kind.

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