Gem Shepherd LLC on Instagram: "🔮 TERRIFIC TOURMALINE — Shepherd’s Gem School, Episode 10 In this week’s class, we dove into one of tourmaline’s most fascinating superpowers: pyroelectricity — its ability to build an electrical charge as its temperature changes. As the crystal warms or cools, its pyroelectric coefficient shifts, creating measurable charge separation along its poles. It’s one of the reasons tourmaline has been prized not just by collectors, but by engineers and innovators across

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The effect is called piezoelectric and pyroelectric behavior.