This silver oval glass vessel is one of Novatto's finest. Constructed of high tempered glass in an elegant oval slipper shape, the Argento Oval vessel has a silver foil painted bottom. Novatto uses advanced technology to produce beautiful glass vessel sinks with unmatched structural integrity and longevity. Constructed of thick 1/2 inch clear high tempered glass, this silver vessel sink will add a punch of cool silver color to your decor. Internal testing has found these vessel sinks to be very durable and forgiving. Tempered glass cannot be compared to everyday synthetic porcelain and ceramics. Internal testing has found these vessels to be very durable and forgiving. Made with the highest standards of quality and creative design, Novatto sinks add art and function to any bath or powder room. This sink has a standard 1.75-inch drain opening. Suggested Novatto pop-up drains: PUD-ORB (oil rubbed bronze), PUD-BN (brushed nickel), PUD-CH (chrome ) or PUD-MB (matte black). Suggested matching mounting rings: MR-001ORB (oil rubbed bronze), MR-001BN (brushed nickel), MR-001CH (chrome) or MR-001MB (matte black). Novatto's customer service is always here to answer any additional technical product questions or help you choose a matching faucet.