Sounds French. Some 3D square diagonals, that’s all you need to know.
Source Graphiste
Prismatic Abstract Geometric Background 5
Source GDJ
A pattern formed from a photograph of a 16th century ceramic tile.
Source Firkin
Almost like little fish shells, or dragon skin.
Source Graphiste
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Not the most creative name, but it’s a good all-purpose light background.
Source Dmitry
Abstract Geometric Monochrome Pattern Prismatic No Background
Source GDJ
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Zero CC tileable pine bark texture, photographed and made by me. CC0
Source Sojan Janso
Background Wall, Art Abstract, Star Well & CC0 texture.
Source Ractapopulous
Zero CC tileable wood texture, made by me procedurally in Neo Texture Edit.
Source Sojan Janso
Prismatic Groovy Concentric Background 2
Source GDJ
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
This one needs to be used in small areas; you can see it repeat.
Source Luca
Alternative colour scheme for the original floral pattern.
Source Firkin
A seamless pattern created from a square tile. To get the tile, select the pattern in Inkscape and use shift+alt+i.
Source Firkin