Composite or granite sinks are sometimes referred to as Quartz sinks. Over time these sinks will likely replace stainless steel sinks, particularly for domestic use.
They are available in White or Black (aka Onyx or Anthracite, the name depending on the manufacturer), and configured for either top mount, undermount or flush mount with the choice of either single or double bowls.
The beauty of these sinks is that they add an extremely sophisticated element to your kitchen and usually have matching accessories such as drainers, colanders, chopping boards, etc.
These extremely durable sinks are manufactured using 80% granite and quartz and 20% acrylic to produce a highly resilient, scratch proof and heat resistant product which is virtually unbreakable. This high level of durability is obtained thanks to an extremely high density of quartz and granite particles in the surface of the sink.