Emeralds, another popular gemstone, derive their lush green color from trace amounts of chromium or sometimes vanadium. Emeralds are a variety of the mineral beryl, which is primarily composed of ...

New York-based, upmarket gemstone dealer has created a series of oil paintings entitled "Tree Portraits" that celebrates the ...

GIA’s laboratories use advanced instrumentation and research to deliver accurate grading, identification, and origin ...

Studio Unto has created a box of crayons that are designed to look like natural minerals. The design explores the metaphor and satisfaction of releasing colours directly from a burnt chalk, an ...