{"product_id":"vintage-west-virginia-swirl-marbles-mixed-partial-uv-glow-lot-25-ct","title":"Vintage West Virginia Swirl Marbles Mixed Partial UV Glow Lot 25 Ct","description":"\u003cp\u003eOriginating from the historic Ohio River Valley glass corridor, this collection highlights mid-century machine-made swirl marbles produced by iconic West Virginia manufacturers such as Alley Agate Company, Ravenswood Novelty Works, and Cairo Novelty Company. Set against dense opaque milk-white glass bases, each example displays bold ribboning and sweeping brushstrokes in cobalt blue, forest green, rich chocolate brown, golden yellow, and deep red. A select portion of the grouping incorporates authentic mid-century chemical dopants, revealing striking fiery cadmium-selenium orange and red fluorescence under ultraviolet blacklight alongside non-reactive examples. Representing the golden era of Appalachian glass manufacturing, these authentic vintage swirls capture the historic techniques, vibrant color formulations, and mechanical roll processes defining mid-20th-century American marble heritage.\u003c\/p\u003e","brand":"My Consignment Store","offers":[{"title":"Default Title","offer_id":53826403959147,"sku":"MB5","price":40.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0968\/0669\/9371\/files\/IMG_5560.jpg?v=1788906325","url":"https:\/\/myconsignmentstore.com\/products\/vintage-west-virginia-swirl-marbles-mixed-partial-uv-glow-lot-25-ct","provider":"My Consignment Store","version":"1.0","type":"link"}