Investigating a set of six antique brooches set with diamonds and light blue cabochons.

Two new deposits of Cu-bearing tourmaline have been found in Paraíba State, Brazil, not far from the original source at Mina da Batalha.

Primary and secondary deposits in the Tan Huong–Truc Lau area of northern Vietnam’s Yen Bai Province have supplied rubies and some sapphires for more than a decade.

Since 2002, tsavorite and other grossular varieties have been recovered from a primary deposit at Itrafo, a village in the Andrembesoa area of central Madagascar.

Two-phase inclusions are investigated in alluvial sapphires from deposits in Montana.

Well-formed crystals of green tourmaline from northwestern Zambia show a growth pattern reminiscent of trapiche emerald/ruby when sliced perpendicular to the c-axis.

The diamond, colored stone, and pearl businesses have witnessed unprecedented change since the turn of the 21st century.

In 2006, emeralds were discovered in the Fazenda Bonfim region of northeastern Brazil.

Over the past 15 years a combination of market forces, environmental events, and scientific research has radically changed the cultured pearl industry.