Roman Glass Round Pendants. All one of a kind. We sent ancient Silk Road glass to Nepal to be set in copper with a copper bail. These one-of-a-kind pendants make stunning earrings or simple pendants to add a touch of elegance to any necklace. Ancient Silk Road glass is found along the old trade route known as the Silk Road. Silk Road glass is often referred to as Roman Glass. Small Rounds - 10mm to 19mm Medium Rounds - 20mm to 24mm Large Rounds - 25mm to 32mm All sizes are approximate and do not include bail