The Conversation on MSN10d
Why are rubies red and emeralds green? Their colors come from the same metal in their atomic structure
Both rubies and emeralds are minerals, which is a type of rock with a consistent ... The chromium replaces about 1% of the ...
Hosted on MSN21d
Experts Discover Ancient Life Locked Inside a 2.5 Billion-Year-Old Ruby as a Residue
The gemstone in question was a 2.5 billion-year-old ruby from Greenland, the University of Waterloo stated. Researchers observed that the ruby sample contained graphite, a mineral made out of pure ...
Mining Weekly10d
New report highlights lack of transparency in coloured gemstone industry
A new report from coloured gemstones miner Gemfields on the emerald, ruby and sapphire markets “… serves as a reminder of how far the coloured gemstone industry still has to go to reach the levels of ...