Glossary Term
By Dr. Rashid Karimov Gemological Spectroscopy Editor
Laser ablation inductively coupled plasma mass spectrometry. A trace-element fingerprinting technique used in modern gemological labs to attribute a stone to its geographic origin by measuring parts-per-million levels of dozens of elements. For Türkiye-sourced diaspore, the iron-to-chromium ratio plus distinctive vanadium and gallium traces produce a recognizable origin signature.
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