Experts say that this previously overlooked gemstone is rocketing in desirability and value, as collectors look beyond the so-called “Big Four’” (diamonds, emeralds, rubies and sapphires ...

There are a number of semiprecious gems, many quite beautiful, but diamonds, rubies, sapphires, and emeralds continue to qualify as "precious." (At one time, amethyst was also considered a ...

People have loved gemstones since antiquity. The Romans thought diamonds came from falling stars, and the Greeks believed them to be heavenly tears. Since gems have been considered precious for ...

In September a cushion-shaped 5.44-carat Paraiba tourmaline ring flew past its US$60,000 upper estimate in auction at Bonhams New York to sell for US$533,900. This is bidding territory more commonly ...