Sounds French. Some 3D square diagonals, that’s all you need to know.
Source Graphiste
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A green background pattern with warped vertical stripes and a grunge look.
Source V. Hartikainen
Vector version of a JPG that was uploaded to Pixabay by theasad121
Source Firkin
Tiny little fibers making a soft and sweet look.
Source Badhon Ebrahim
Embossed lines and squares with subtle highlights.
Source Alex Parker
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
Just the symbols of the signs of the zodiac distributed in a chequer board-like pattern
Source Firkin
Sweet and subtle white plaster with hints of noise and grunge.
Source Phil Maurer
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
Source Firkin
An emulated “transparent” background pattern, like that of all kinds of computer graphics software.
Source AdamStanislav
A seamless pattern formed from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless textured paper for backgrounds. Colored in pale orange hues.
Source V. Hartikainen
Prismatic Polka Dots Mark II 2 No Background
Source GDJ
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Black brick wall pattern. Brick your site up!
Source Alex Parker
To get the tile this is made up from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Plywood Web Background background image for use in web design.
Source V. Hartikainen
ZeroCC tileable beechwood wood texture, generated in Neo Texture Edit by me. CC0
Source Sojan Janso
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
It looks like a polished stone surface to me. Download it for free, as always.
Source V. Hartikainen
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
Prismatic Abstract Geometric Background 5 No Black
Source GDJ