Sterling Silver Clear Amethyst Colored Cubic Zirconia CZ Pendant

Dating to the 1980s/1990s or so, here's a Sterling Silver (hallmarked as pictured) pendant in a round shape featuring a very dark amethyst colored Cubic Zirconia CZ at the center surrounded by a border of clear white CZs. From top of bale to bottom measures 15/16"; width is 9/16". The center stone measures 9.5mm (about 3 Carats) while the clear stones measure 2mm (3 points). Weight is 3.2 grams. Makers marks on the reverse are RSE - letters I am not familiar with. Lovely color to the center stone with a terrific flash and tinges of a color change when held to the light. A small pendant that makes a nice statements - all that's needed now is the right chain, mine is for display purposes only