Since 1994, Unique Glass Colors has been a Phoenix-based source of kiln-fired color materials for artists and hobbyists. Its specialty is helping makers add color and surface effects to glass and other projects, including with mica-based Accents.
Mayco ColorsFounded in 1954, Mayco Colors manufactures ceramic art supplies, including fired glazes, bisque forms and decorating accessories, for everyone from classroom artists to professional potters. The family-owned company has 55 employees and is built around a ceramics-minded staff that includes engineers, art educators and working ceramic practitioners. Since acquiring Duncan Enterprises’ ceramic color division in 2020, Mayco has also carried forward selected Duncan products while providing technical support, education and creative resources through its worldwide distributor network.HILLIARD, OH
Paul Wissmach Glass CompanyIn Paden City, West Virginia, Paul Wissmach Glass Company makes American-made art glass for artists and designers, from stained-glass sheets to COE 96 kiln glass and casting materials. The company has produced glass continuously since 1904, using hand-mixed color blends that include recipes more than a century old and rolling them through one of its 13 firebrick furnaces. Now employing more than 40 people, Wissmach ships through a worldwide distributor network and celebrated 120 years of production in 2024.PADEN CITY, WV
Kopp Glass, IncFounded by color-glass formulator Nicholas Kopp more than 90 years ago, Kopp Glass manufactures custom molded glass for mission-critical applications, with compositions spanning ultraviolet through infrared wavelengths. The Pittsburgh company’s portfolio includes more than 200 engineered glasses, while its fully integrated, U.S.-based operation develops tooling, prototypes and finished parts under one roof. Kopp also invented “Selenium Red” in 1926, a formulation that helped establish its long-standing role in airfield and signal lighting.PITTSBURGH, PA
ColorKoteColorKote manufactures custom decorative and architectural glass products in Middletown, New York. Its offerings include coated and painted glass, tempered and laminated glass, antique mirrors, glass boards, textured and graphic glass, with custom lamination, fabrication, exterior-glass, lighting, and certified-installation capabilities.MIDDLETOWN, NY