Dichroic Glass Drop Earrings Handmade by Geddes Studios Blues/black with black bicon and seed beads Approx. 1" across and 2 1/2" long At Geddes Studio we fuse together dichroic and colored glass to create a unique line of jewelry, beads and sculptures. Dichroic glass was revitalized in the 90"s by the aerospace industry for use in the star was program. Each piece of dichroic glass has three distinct colors: one, when light is transmitted straight through, and a second when light is transmitted at a 45 degree angle and the third when all the light is reflected. This phenomenon is the result of vapor deposition of thin layer coatings of non-conducting metal oxides and results in luminescence, illusion, depth and spectacular color. New without tags. Each piece is unique and no 2 pieces are alike. May have slight imperfections due to the processing.