This product is manufactured by calcination of raw bauxite available at Guyana (Latin America) in rotary kiln having firing zone temperature between 1550 to 1650 ⁰C. This bauxite exhibited superior thermomechanical properties due to presence of lesser impurities in comparison with Chinese Bauxite. South American bauxites exhibited a toughening mechanism due to the presence of a needle-like mullite skeleton, which deflected cracks and increased toughness. The tougher behaviour of South American bauxites resulted from the more pronounced precipitation of secondary mullite, facilitated by the greater dissolution of unstable alpha alumina grains during sintering. This product is available in various size fractions like 0-1, 1-3, 3-5, 5-8, 8-15 mm. Grains are round in nature for this product.