Porter illustrates the Diamond Model which looks at the immediate business environment surrounding and influencing competitiveness. The Diamond Model influences conditions likely to have a fundamental impact on the productive potential of firms : factor input conditions, demand conditions, firm strategy and rivalry, and availability of related and supporting industries. The process of economic development is about improving the Diamond Model so that firms in each cluster can achieve successively higher levels of achievement and productivity. This study utilises the Diamond Model to evaluate the existing competitiveness status of supported industrial cluster.