Hayes, Peter - Medium Glass Disc with 24 carat Gold (College Farm Coll – Primavera Gallery
High Temperature Resistant and Transparent Quartz Glass disc Optical Lens high Transmittance Infrared Ultraviolet (10-0.3mm(10)) : Amazon.co.uk: Business, Industry & Science
Large Murano Glass Disc Chandelier, 1980s for sale at Pamono
Transparent Glass Discs Various Sizes & Colours Available - Etsy UK
Borosilicate View Mirror,Sight Glass Disc Diameter 50mm-165mm,High-Heat and High-Pressure Glass Disc,Thickness 10mm,Error ±1mm-155x10mm : Amazon.co.uk: Business, Industry & Science