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Dichroic Glass Murano Glass Pendant 4mm Snake Chain V308

$99.00
PRODUCT: You will receive the EXACT item as pictured MATERIAL: 925 Sterling Silver + Bonded Copper PATTERN: Vintage filigree pattern with Antique Polish PLACE OF ORIGIN: Vancouver, Canada MEASUREMENT: Shown Against the Scale TYPE OF CLASP: Lobster Clasp for the chains INCLUDED: FREE Venetian Snake Chain LENGTH (Inch): 16, 18, 20, 22, 24, 26, 28 & 30 inches SHIPPING: Cost Specified at checkout WEIGHT: Varied STAMP / MARK: SARAH CONDITION: New COLOR: As pictured SHAPE: As shown PACKAGING: Polishing cloth + Hard cover boxes Dichroic (pronounced "dye-crow-ick") glass, commonly called dichro for short, literally means "two colored." It is derived from the Greek words "di" for two, and "chroma" for color. It was thus named because of its fantastic multicolored and reflective properties. When you look at this glass, it appears to have more than one color at the same time, especially when viewed with different lighting. We know dichroic glass art has been around since the Roman Empire thanks to the Lycurgus Cup, a 4th Century glass cup that seems to be a different color depending on lighting. The effect was originally created with trace amounts of gold and silver in a large glass melt, resulting in glass that only partially reflects light passing through it. 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. The resulting dichroic glass coating is completely transparent to the human eye and is applied in layers to protect spacecraft technology and astronaut vision from harmful radiation of unfiltered sunlight in space. The complete process may require from 15 to 45 different layers totaling a width that is smaller than a human hair.