This one has rusty dark brown texture.
Source V. Hartikainen
Prismatic Groovy Concentric Background 5 No Black
Source GDJ
From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
Remixed from a PNG that was uploaded to Pixabay by k_jprather
Source Firkin
Zero CC tileable Crackled Cement (streaks) texture, photographed and made by me. CC0
Source Sojan Janso
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
A seamlessly tile-able grunge background image.
Source V. Hartikainen
A nice and simple gray stucco material. Great on its own, or as a base for a new pattern.
Source Bartosz Kaszubowski
Light gray pattern with an almost wall tile-like appearance.
Source Markus Tinner
Abstract Geometric Monochrome Pattern Prismatic No Background
Source GDJ
Abstract Tiled Background Extended 12
Source GDJ
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Seamless tile drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Very dark pattern with some noise and 45-degree lines.
Source Stefan Aleksić
Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
Paper model of a tetrahedron. Modelo de papel de um tetraedro.
Source laobc
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin