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# LMHC

The Laboratory Manual Harmonisation Committee

## Sitemaps

- [XML Sitemap](https://www.lmhc-gemmology.org/sitemap.xml): Contains all public & indexable URLs for this website.

## Pages

- [The Laboratory Manual Harmonisation Committee](https://www.lmhc-gemmology.org/) - The goal of the LMHC is to achieve the harmonisation of gemmological report language and thereafter the revision of it as used by LMHC members.
- [Information Sheets](https://www.lmhc-gemmology.org/information-sheets/) - The Information Sheets (IS) issued by the LMHC, help users and the trade to properly comprehend the language used in gemmological reports issued by LMHC members.
- [News](https://www.lmhc-gemmology.org/news/) - LMHC News 29/09/2025 LMHC reports significant progress in harmonising report nomenclature for gem colour stability, tanzanite, cobalt spinel and jade The Laboratory Manual Harmonisation Committee (LMHC) has reported significant progress towards its goal of achieving the harmonisation of language used on gemmological reports, following its latest meeting, which was hosted by the Swiss Gemmological
- [Cookie Policy (EU)](https://www.lmhc-gemmology.org/cookie-policy-eu/) - This Cookie Policy was last updated on 06/05/2025 and applies to citizens and legal permanent residents of the European Economic Area and Switzerland.1. IntroductionOur website, https://www.lmhc-gemmology.org (hereinafter: "the website") uses cookies and other related technologies (for convenience all technologies are referred to as "cookies"). Cookies are also placed by third parties we have engaged. In
- [About the Laboratory Manual Harmonisation Committee](https://www.lmhc-gemmology.org/about-lmhc/) - Gemmological laboratories offer a wide range of services from gemstone and gemstone treatment identification to origin determinations and diamond grading.
- [Contacts & Links](https://www.lmhc-gemmology.org/contact/) - The following world-renowned gemmological laboratories (listed in alphabetical order) are represented within the LMHC
- [Gemstone Information Sheets](https://www.lmhc-gemmology.org/gemstones/) - The following world-renowned gemmological laboratories (listed in alphabetical order) are represented within the LMHC
- [Pearl Information Sheets](https://www.lmhc-gemmology.org/pearl-information-sheets/) - The following world-renowned gemmological laboratories (listed in alphabetical order) are represented within the LMHC