Ruby and sapphire of natural or synthetic origin can be heat treated to improve asterism; to remove asterism or silk; to improve, add, or remove color; and even to alter imperfections. At least nine ...

This transformation was caused by the discovery of a number of large deposits and the development of treatment processes that enhanced the color and clarity of huge quantities of previously ...

Recent years have seen a rainbow array of stunning gemstones taking center stage, marking a shift towards celebrating ...

SINCE Kate Middleton started dating Prince William she has been given an enviable collection of dazzling diamonds and ...