Excerpt: Once cherished by ancient civilisations from Egypt to Mesopotamia, lapis lazuli, often dubbed "blue gold," continues ...

From pink ombre stone mosaic tiles to rugs forged from upcycled Josef Frank fabrics, here are some of this week’s most ...

Russian astronomers have conducted photometric observations of a unique extremely metal-poor luminous blue variable star ...

The colors of rubies and emeralds are so striking that they define shades of red and green—ruby red and emerald green. But ...