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In page Oamaru stone:

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The stone is porous, making it susceptible to weathering in damp conditions, but sturdy in a moderate to dry climate. It is soft when first quarried, hardening on exposure to air.[2] This, along with its uniform texture, makes it excellent for sculptural and ornamental purposes. The finished stonework has a creamy, sandy colour. It is not strongly resistant to pollution, and can be prone to surface crumbling, but is excellent as a material for internal architectural ornamentation. It is also greatly used for free-standing carvings and sculptures.