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Rag-stone is a name given by some architectural writers to work done with stones that are quarried in thin pieces, such as Horsham Stone, sandstone, Yorkshire stone, and the slate stones, but this is more properly flag or slab work. By rag-stone, or Kentish rag, near London, is meant an excellent material from the neighborhood of Maidstone. It is a very hard limestone of bluish-grey colour, and peculiarly suited for medieval work. It is often laid as uncoursed work, or random work, sometimes as random coursed work and sometimes as regular ashlar. Ragstone, a dull grey stone, is still quarried on an industrial scale close to the Kent Downs AONB. It has traditionally been used within the AONB as a road stone, cobble or sett and a walling block. Although difficult to ‘dress’ with a regular face it has been used as rectangular blocks for the construction of walls and buildings and was very popular for the construction of 19th-century churches. More frequently, owing to the difficult and variable nature of the stone, it is seen as irregular and self-faced irregular blocks in walling. Due to its irregular shape, as with flint, ragstone has been set within brick quoins and bands. ‘Spalls’, fist sized irregular chips of ragstone, have been used to surface paths but modern usage of ragstone is as a general construction aggregate, including fill for gabions and loose or partly binding gravels.

This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). Encyclopædia Britannica (11th ed.). Cambridge University Press. {{cite encyclopedia}}: Missing or empty |title= (help)

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 {{Main|Kentish Ragstone}}
-'''Rag-stone''' is a name given by some [[architectural]] writers to work done with [[Rock (geology)|stone]]s which are [[quarried]] in thin pieces, such as [[Horsham Stone]], [[sandstone]], [[Yorkshire]] stone, and the [[slate]] stones, but this is more properly flag or slab work. By rag-stone, or '''Kentish rag''', near [[London]], is meant an excellent material from the neighborhood of [[Maidstone]]. It is a very hard [[limestone]] of bluish-grey colour, and peculiarly suited for [[medieval]] work. It is often laid as uncoursed work, or random work, sometimes as random coursed work and sometimes as regular [[ashlar]].
+'''Rag-stone''' is a name given by some [[architectural]] writers to work done with [[Rock (geology)|stone]]s that are [[quarried]] in thin pieces, such as [[Horsham Stone]], [[sandstone]], [[Yorkshire]] stone, and the [[slate]] stones, but this is more properly flag or slab work. By rag-stone, or '''Kentish rag''', near [[London]], is meant an excellent material from the neighborhood of [[Maidstone]]. It is a very hard [[limestone]] of bluish-grey colour, and peculiarly suited for [[medieval]] work. It is often laid as uncoursed work, or random work, sometimes as random coursed work and sometimes as regular [[ashlar]].
 Ragstone, a dull grey stone, is still quarried on an industrial scale close to the [[Kent Downs AONB]]. It has traditionally been used within the AONB as a road stone, cobble or sett and a walling block. Although difficult to ‘dress’ with a regular face it has been used as rectangular blocks for the construction of walls and buildings and
 was very popular for the construction of 19th-century churches. More frequently, owing to the difficult and variable nature of the stone, it is seen as irregular and self-faced irregular blocks in walling. Due to its irregular shape, as with flint, ragstone has been set within brick [[Quoin (architecture)|quoins]] and bands. ‘Spalls’, fist sized irregular chips of ragstone, have been used to surface paths but modern usage of ragstone is as a general construction aggregate, including fill for [[gabions]] and loose or partly binding gravels.