Can Jade / Jadeite actually change colour over time?
I've always heard this myth by the older generation swear by :
The longer you wear a jade, the 'greener' it gets. Basically 人养玉，玉养人
Since they are essentially a stone crystal, I'm personally leaning towards it being a hoax...? Would love to know more from anyone knowledgeable about this..
From a quick search of jade-related academic articles:
From this study I found that we now use a combination of FTIR, Raman and XRF spectroscopies to identify jade, which are all testing the chemical composition of jade. -- not colormetric
This paper does discuss the alterations of jade color , in which they describe 'alteration' as : to refer to chemical component and structural changes in jade artifacts caused by human activity and natural weathering. >> in which alterations of different hues of green was caused by malachite alteration > caused when in present of large amounts of copper