Illustrated Guide

to the natural beauty and value of coloured diamonds

Gray (GY)-grayish (gy):

A perceived colour resembling the colour of the metal nickel, aluminum, or pewter. Gray is a neutral colour containing little or no saturation. The addition of small quantities of blue or green will produce a cool gray colour, while the addition of brown or yellow will produce a warm gray colour. Gray colours often appear very different when viewed under average natural daylight versus an artificial light source. Natural gray diamonds occur within a specific region of colour tone. Their lightness extends from very light (smoke) gray, through dark (graphite) gray colours.