Alibaba.com offers 97 gilsonite products. About 30% of these are bitumen, 30% are petroleum additives, and 9% are surfactants. A wide variety of gilsonite options are available to you, such as natural bitumen, petroleum asphalt. There are 97 gilsonite suppliers, mainly located in Middle East. The top supplying country is Iran (Islamic Republic of), which supply 100% of gilsonite respectively. Gilsonite products are most popular in Southeast Asia, South Asia, and Eastern Asia.