Beautiful, high end, thick green poured glass stones, aka Gripoix (so-called because it was her jewelry making process and not by the House of Gripoix), set in gold plated closed back metal with clip so they are very comfortable. There is a gold plated hand soldered rope around the edges of it indicative that they were completely hand made. These look sort of like what KJL or YSL did but are unsigned as to whom made them.
They measure about 1" across and 1/2" high. Lovely deep forest green glass, very sophisticated modern design, they wear easy on the lobes. Almost immaculate, unused condition. The glass is dark green but show up in the light as an emerald color. The last photo shows them without a flash.
Please view photos and enlarge for details. Circa 1980s.