During my nap I came up with:
Only one diamond seed pattern is needed. It would have a very slight thickness.
One loop would control the random rotation of the seed, but rotation would be selectively limited to say 70 degrees so that none of the diamonds appeared to be edge on. There would be three rotations, point-point, point-point, and center.
The rotation would have the effect of making the diamonds look smaller.
Number of diamond per wavy line would be selectable.

The rotated seeds would be placed at a random length along one of the base curves.
A base curve could be a parabola, as for falling seeds, spilled from a jar.
A helix might be a good base curve, or just a wavy line.

Additional wavy lines could be by semi-random offset.

Then add some wind...

Edit, or Scale X or Scale Y looks 2D, like a rotation.