Dichroic glass became more widely known in modern society when NASA decided to use it in the 1950s and '60s. The difference is, instead of using silver and gold, NASA developed a process to vaporize metals with electron beams in a vacuum chamber and then apply it directly to surfaces in an ultra-thin film.
This process is now used to make jewelry-making supplies such as colorful beads, pendants and more. When making dichroic glass jewelry, the type of metallic oxides, order applied and number of layers used will determine the final look of the glass. Once the coating process is completed, the whole coated piece is fired in a kiln at high temperatures to fuse the oxides to the glass.
This beautiful cuff bracelet, by an unknown designer, circa late 20th Century, is solid dichroic glass. The medium blue bracelet showcases three floral designs with floating gold petals and delicate millefiori cut cane centers. The bracelet measures from 1" to 1/4" in width. The widest opening measures 2 5/16" across and 1 1/8" across the open end. Wonderful vintage condition with no issues; near mint.