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I know, I know. This doesn’t LOOK like tourmaline on first glance. The terminations are bizarre. The whole formation is bizarre. So just to prove it, here’s a little test on it. If you’re unfamiliar with what I’m doing here, I’m taking some relatively common geological tools but repurposing them for rough crystals. That greigey thing is a refractometer - it measures the refractive index of a substance, and difference materials have different known RI ranges. This is a SUPER useful test to perfor
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I know, I know. This doesn’t LOOK like tourmaline on first glance. The terminations are bizarre. The whole formation is bizarre. So just to prove it, here’s a little test on it. If you’re unfamiliar with what I’m doing here, I’m taking some relatively common geological tools but repurposing them for rough crystals. That greigey thing is a refractometer - it measures the refractive index of a substance, and difference materials have different known RI ranges. This is a SUPER useful test to perfor
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