LMHC Harmonizes on Color Stability, Cobalt Spinel, Tanzanite, Jade

Posted on October 13, 2025 by Brecken Branstrator, GIA GG

The Laboratory Manual Harmonisation Committee (LMHC) has further harmonized the language it uses on reports for a few more topics following its latest meeting in Basel, Switzerland, in May. Originally founded in 2001, the LMHC brings…

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