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kronckew · 14th September 2023, 07:24 PM

Silver turns black quickly in sulphur compounds . Egg yolk contains sulphur. A drop of egg yolk on the ganga will turn it black VERY quickly, depending on the silver content. Mine did.

14th September 2023, 07:24 PM	#23
kronckew Member Join Date: Mar 2006 Location: Room 101, Glos. UK Posts: 4,205	Silver turns black quickly in sulphur compounds . Egg yolk contains sulphur. A drop of egg yolk on the ganga will turn it black VERY quickly, depending on the silver content. Mine did. Attached Images