Historically, gems have been divided into precious and semiprecious classes. There are a number of semiprecious gems, many quite beautiful, but diamonds, rubies, sapphires, and emeralds continue ...

This single tiny crystal may have told us more about the red planet’s first few hundred million years than every other source ...

The saga of Holy Gems, the only certified miner and marketer of precious gems from Israel, began in 1988 in Brooklyn, New York, when Rabbi Menachem Mendel Schneerson, the Lubavitcher Rebbe, hosted ...