Comment on I found ultra-pure quantum crystals in an abandoned mine in the Atacama desertparentComments−s0rce3moI think the materially, even pure, is strongly colored, so you can't easily determine impurities visually, unlike diamonds and sapphires and other colorless-when-pure minerals.
Comments
I think the materially, even pure, is strongly colored, so you can't easily determine impurities visually, unlike diamonds and sapphires and other colorless-when-pure minerals.