Sounds French. Some 3D square diagonals, that’s all you need to know.
Source Graphiste
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Abstract Geometric Monochrome Pattern Prismatic No Background
Source GDJ
Lovely pattern with splattered vintage speckles.
Source David Pomfret
Same as Silver Scales, but in black. Turn your site into a dragon with this great scale pattern.
Source Alex Parker
It’s a hole, in a pattern. On your website. Dig it!
Source Josh Green
The first pattern on here using opacity. Try it on a site with a colored background, or even using mixed colors.
Source Nathan Spady
Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
An alternative colour scheme for the original seamless texture formed from an image on Pixabay.
Source Firkin
This was formed by distorting an image of a background on Pixabay.
Source Firkin
It’s like Shine Dotted’s sister, only rotated 45 degrees.
Source mediumidee
Fix and cc0 to get the tile this is based on.
Source SliverKnight
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
Alternative colour scheme for the original floral pattern.
Source Firkin
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Prismatic Curved Diamond Pattern 3 No Background
Source GDJ
Prismatic Triangular Background Design Mark II 5
Source GDJ