__NOTOC__ Greenstone may refer to:
Geology Greenstone (archaeology), various types of stone used by early cultures, covering jade and similar stones Greenstone belt, Archean and Proterozoic volcanic–sedimentary rock sequences Isle Royale greenstone Chlorastrolite, found in the Keweenaw Peninsula of Michigan and Isle Royale in the US Pounamu (New Zealand jade/greenstone), several types of hard and durable stone found in southern New Zealand Greensand (geology), glauconite bearing sandstone and a geologic formation in the UK Greenschist, metamorphosed mafic volcanic rock and a metamorphic facies Elvan, a quartz-porphyry found in Cornwall, UK
Places Greenstone, Ontario, a municipality in Canada Greenstone, Queensland, a locality in the Moreton Bay Region, Australia Greenstone Hill, a suburb of Johannesburg, South Africa Greenstone Point, a high rock spur along the north front of Jones Mountains, Antarctica Greenstone River, river in the Otago/Southland region, New Zealand
Other Greenstone (software), an open source digital library software package Greenstone Building, a Canadian government building in Yellowknife Greenstone Financial Services, an Australian insurance distributor Greenstone TV, a television production company, New Zealand Greenstone, the generics division of Pfizer
See also List of greenstone belts Marion Greenstone (1925–2005), American artist