In some views Siva is the third form of God as one of the Trimurti (popularly called the "Hindu trinity"). In the Trimurti, Siva is the destroyer, while Brahma and Vishnu are creator and preserver respectively. However, even though he represents destruction, Siva is viewed as a positive force (The Destroyer of Evil), since creation follows destruction.
Siva is usually represented by the Siva linga (or lingam), usually depicted as a clay mound with three horizontal stripes on it, or visualised as a flaming pillar. Siva is generally represented as immersed in deep meditation on Mount Kailash, his traditional abode.
We regularly stock brass statuary of Siva.