Description The query likely refers to a gas valve knob manufactured by the brand Jade Range, which is typically chrome-plated and features a “D” shaped stem fitting. They are not generally “jade” colored Features Material: Stainless Steel, Chrome-Plated Outer Diameter: Available in sizes like 2 3/4″ (70mm) and 2 1/2″ (64mm) Stem Type: Designed for a 0.350″ “D” stem interface Off Position: Typically noted…