Renaissance: Meaning literally ‘rebirth’, a term referring to developments in art, philosophy and culture during the 14th, 15th and 16th centuries.  The movements reached a peak between 1500 to 1520 with the works of Leonardo Da Vinci and Michelangelo.

Replica: A copy of a painting or a piece of sculpture made by the person who executed the original.

Reredos: A relatively small altarpiece that can stand on the floor itself or on a pedestal behind it.

Retable: A fairly large and complex altarpiece that rises from floor level.

Radiant-Cut: An eight-sided rectangular or square-cut stone with approximately 70 facets.

Return of Light: The amount of light that reflects out the top of the diamond to the eye, or the measurement of diamond brilliance.

Rhodium: A shiny platinum group metal that increases whiteness and strength of other metals.  A rhodium finish also helps to prevent tarnishing.

Rope Chain: Several strips of metal are twisted together, resulting in a chain with a rope pattern.

Round Brilliant-Cut: Diamond cutters have developed this cut over hundreds of years.  The round cut brings out a diamond's brilliance, dispersion and scintillation.

Ruby: The red form of the mineral, corundum.  Along with sapphires, rubies are the second hardest minerals, (diamonds are the hardest).  Rubies serve as the birthstone of July and the traditional gift for the 15th and 40th wedding anniversaries.