| GUNSTONE | • gunstone n. (Obsolete) A cannonball. • Gunstone prop.n. A hamlet near Codsall, South Staffordshire district, Staffordshire, England (OS grid ref SJ8704).
 • Gunstone prop.n. A habitational surname.
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| SUNSTONE | • sunstone n. (Mineralogy) A translucent form of feldspar having flakes of hematite, used as an ornamental stone. • SUNSTONE n. a variety of quartz.
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| TINSTONE | • tinstone n. The mineral cassiterite. • TINSTONE n. an ore of tin, cassiterite.
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| CORNSTONE | • cornstone n. (Mineralogy) A kind of marly siliceous rock. • CORNSTONE n. a silicious limestone favourable for cereal crops.
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| HORNSTONE | • hornstone n. Hornfels. • HORNSTONE n. an alternative name sometimes given to chert.
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| IRONSTONE | • ironstone n. Any ore of iron which is impure through the admixture of silica or clay. • ironstone n. A type of vitreous pottery similar to stoneware.
 • IRONSTONE n. a hard, earthy ore of iron.
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| MOONSTONE | • moonstone n. (Mineralogy) A translucent gemstone, an orthoclase feldspar, that has a pearly lustre. • MOONSTONE n. a nearly pellucid variety of feldspar, showing pearly or opaline reflections from within.
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| TURNSTONE | • turnstone n. Either of two species of coastal wading bird, Arenaria interpres and Arenaria melanocephala, that breed… • TURNSTONE n. any of various species of limicoline birds, allied to the plovers.
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| VEINSTONE | • veinstone n. (Geology, mining) Synonym of gangue. • VEINSTONE n. gangue, also VEINSTUFF.
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| WHINSTONE | • whinstone n. A stone used to crush whin for use as winter feed for cattle. • whinstone n. (Quarrying industry) Any hard dark-coloured rock.
 • WHINSTONE n. a hard and compact rock, also WHUNSTANE.
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| BROWNSTONE | • brownstone n. (Uncountable) A variety of brown to red-brown sandstone once popular as a building material. • brownstone n. (Countable) A row house built of brownstone, especially in New York City.
 • BROWNSTONE n. a dark variety of sandstone, much used for building purposes.
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| GREENSTONE | • greenstone n. (Archaeology) any of several green-hued minerals used for making various artefacts in early Mesoamerican… • greenstone n. (New Zealand) pounamu, the green-hued minerals of New Zealand used by Māori to make tools, ornaments…
 • Greenstone prop.n. A surname.
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| QUERNSTONE | • quernstone n. Either of a pair of stones used for grinding material by hand. • QUERNSTONE n. a quern, a stone mill for grinding corn.
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| AMAZONSTONE | • amazonstone n. A bluish-green variety of microcline feldspar used as a gemstone. The best known occurrences are at… • AMAZONSTONE n. a green microcline, aka amazonite.
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| ROTTENSTONE | • rottenstone n. (Geology) A soft, friable limestone, used in polishes. • rottenstone v. (Transitive) To polish with rottenstone.
 • rotten␣stone n. Alternative form of rottenstone.
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| SPLEENSTONE | • spleen␣stone n. (Archaic) A jade or nephrite stone. • SPLEENSTONE n. (obsolete) jade.
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