Antique Tube Hinged 10K GP Poured Glass French Jet Black Mourning Brooch Estate

Antique Jewelry Collectors Estate Tube Hinged Pin Victorian 1850s to 1910 19thC Yellow 10K Gold Plated Poured Glass French Jet Art Deco Oval Brooch This large 1.5" X 1.25" vintage brooch features a handblown completely opaque black poured glass oval cabochon set into an open back banded bezel setting in 10K gold plated non ferris frame. French jet refers to a type of black glass jewelry popularized during the Victorian Era. Often used to signify mourning in the time, real Jet became incredibly hard to find at the time, especially due to its rise in popularity. To satisfy demand when real jet supplies were depleted, black glass was used in many pieces and came to be known as “french jet”.The materials were made in countries like Austria famous for their glass-making expertise, and then crafted into jewelry in England and France among other countries in the west of the continent. Tested with Presidium Gem Tester II. Tests as hardened glass. I believe the original 'C' clasp was replaced with a safety clasp. Signed / Marked / Stamped - None Condition - Great vintage condition with some scratches and scuffs on the face of the stone and some petina/plate loss. See all unedited and close up pics for more information, or feel free to send me a question. Smoke-free home J9 Tags: Whitby jet Onyx Twist Pin Rolled Byzantine Antiqued Vintage Old Gothic French Country Regal Royal Edwardian Victorian Ornate Mobwife Lux oversized statement runway grandmacore goth solid black