In the collection which you can download here you will find 3 oval and 17 semicircular stained glass patterns.
Half Round Window Photos and Images
Oval shaped shell hi-res stock photography and images - Alamy
Handrail mouldings
Bieye W10034 36 Inches Peacock Tiffany Style Stained Glass Window Panel with Hanging Chain
Parquet patterns
Antique Arts & Crafts Stained Glass Half Circle Window
Inlay table pattern
Premium Vector Stained church glass semicircle shape
Round Stained Glass Frame - Crones Custom Woodworking