It looks like a polished stone surface to me. Download it for free, as always.
Source V. Hartikainen
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
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Remixed from a JPG that was uploaded to Pixabay by theasad121
Source Firkin
A seamless pale yellow paper background with a pattern of animal tracks.
Source V. Hartikainen
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
A pale orange background pattern with glossy groove stripes.
Source V. Hartikainen
It’s a hole, in a pattern. On your website. Dig it!
Source Josh Green
To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
Can never have too many knitting patterns, especially as nice as this.
Source Victoria Spahn
Light honeycomb pattern made up of the classic hexagon shape.
Source Federica Pelzel
A subtle shadowed checkered pattern. Increase the lightness for even more subtle sexiness.
Source Josh Green
Imagine you zoomed in 1000X on some fabric. But then it turned out to be a skeleton!
Source Angelica
New paper pattern with a slightly organic feel to it, using some thin threads.
Source Atle Mo
Kaleidoscope Prismatic Abstract No Background
Source GDJ
Awesome name, great pattern. Who does not love space?
Source Nick Batchelor
Prismatic Isometric Cube Wireframe Pattern No Background
Source GDJ
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
Tiny little fibers making a soft and sweet look.
Source Badhon Ebrahim
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Zero CC tileable Laminate wood texture, photographed and made by me. CC0
Source Sojan Janso
Prismatic Polka Dots Mark II 3 No Background
Source GDJ