Santo Antônio de Pádua, located in the northwest of the State of Rio de Janeiro, is an important pole producing ornamental rocks. The municipality of 41,312 inhabitants, reached 6,000 jobs linked to the sector. After many decades of intense activity in the municipality without complying with any environmental, social and labor requirements, producers were forced to organize to legalize their activities. The public agencies together with the producers, began to carry out actions to modernize and legalize the companies of the cluster. Several research has been done to improve cluster. Until the present day, producers still find it difficult to comply with the legal determinations that the activity demands. The objective of this research is to evaluate the perspectives of the actors who had an experience with the cluster in relation to environmental, economic and spatial aspects, seeking to identify the difficulties that compromise the sustainability of the sector. To reach the proposed goal, were carried out bibliographical reviews, interviews with various actors, participation in union assemblies and visits to companies. Countless researches already went carried out to improve cluster, mainly in technological and environmental aspects. Even though there was a movement of union of the institutions to legalize the companies of the sector, there was a disaggregation after some goals reached. The vast majority of companies did not incorporate the innovations produced, besides that, only a select group of companies that dominate the market in the municipality.
Keywords: Cluster. Environmental. Minning. Ornamental Rocks.