Glossary Blog

Ceylon is a gem-rich island off the southern tip of Sri Lanka that produces a beautiful, deep blue sapphire, though still paler than the famous Kashmir sapphire.    

A gemologist is a title granted by a gemological institute such as the American Gem Society (AGS) or the Gemological Institute of America (GIA)

centrifugal casting. A method of making small metal castings used in jewelry shops. Molds filled with melted metal (usually gold or silver)

Diamond Grading. A cavity is an equidimensional opening in the surface of a polished diamond, sometimes caused by a blow or the pulling out of a knot in polishing.