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How to Use a Gem Refractometer: Refractive Index, Birefringence, and Identification Limits
onUse a gem refractometer to record RI and birefringence evidence while recognizing range, surface, and identification limits.
Refractometer Blog: How to Use, Calibrate & Choose » Product Comparisons
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How to Use a Gem Refractometer: Refractive Index, Birefringence, and Identification Limits
Use a gem refractometer to record RI and birefringence evidence while recognizing range, surface, and identification limits.
