Translate

Tuesday, January 26, 2021

Treated Hemimorphite

Mineral collectors and dealers beware. Currently dyed blue hemimorphite from Mina Ojuela, Mapimi, Durango, Mexico has been sold as natural hemimorphite. The treaters are usng a synthetic blue pigment called Phthalocyanine Blue BN, an organic dye. This dye is stable and difficult to remove. You need Raman Spectroscopy to identify the treatment.


Useful link: https://www.rockngem.com/on-the-rocks-much-talked-about-hemimorphite-lacks-authenticity

No comments: