This Chanel long necklace is crafted in gold-tone metal, featuring red and green Gripoix gems throughout. About Gripoix Glass: First produced by Parisian glass-maker Augustina Gripoix in the late 1800s, the eponymous jewelry style was created by pouring glass into shapes and colors meant to imitate the look of authentic pearls and crystals. Coco Chanel later made this poured glass iconic by replicating Byzantine-style jewelry using the Gripoix glass. Chanel Gripoix jewelry has since become covetable and collectible to followers of the house, as the original vintage pieces become increasingly harder to find.