Elaeocarpus ganitrus

Elaeocarpus angustifolius is a species of flowering plant in the family Elaeocarpaceae that occurs from India to New Caledonia and northern Australia. Common synonyms are E. ganitrus and E. sphaericus. It is a large evergreen tree, often with buttress roots, and has leaves with wavy serrations, creamy white flowers and more or less spherical bright blue edible fruit. In English, the tree is known as utrasum bean tree in India. In Sri Lanka recorded names are woodenbegar and Indian bead tree. It is simply known as elaeocarpus in the Northern Territory of Australia. Other names used for this tree in Australia are Indian oil fruit and genitri. In Hawaii it (or the possible synonym E. grandis) is known as a blue marble tree. In India, the cleaned pits of the fruit of this tree are known as rudraksha (from Sanskrit: rudrākṣa, meaning "Rudra's teardrops" or "eyes") and are widely used as prayer beads, particularly in Hinduism. Rudraksha might be produced by more than one species of Elaeocarp......read more on Wikipedia.