Jet, a flat-black, opaque gemstone derived from wood that has experienced extreme compression over millions of years, was the ...
Jet, a flat-black, opaque gemstone derived from wood that has experienced extreme compression over millions of years, was the haute stone throughout the Victorian era, a time when fashion and ...
(CNN) — Radiant diamonds, sapphires, and rubies have been among the most coveted gemstones on the planet for nearly a century. But long before their reign, a far less dazzling gem captured the ...
Adam Hart-Davis shows a life size recreation of the experiment Isambard Kingdom Brunel used to demonstrate the power of propellers. The teacher could bring in a Victorian map and ask the students to ...