Need to recreate this gradient in Illustrator. I tried the various gold/metallic gradients, but nothing close to this, and not as random. Is it achiveable in any other software? Any ideas? Thank you.
In Illustrator you can: Make new swatches of the colours in your reference image. Select your circles and make it a live paint object. With the live paint group selected, use the bucket tool and your left right arrow keys to cycle through your swatches and fill your circles. You can hold down your mouse button/stylus and draw across multiple circles to fill them with the same colour/swatch.
Since you say that you can pick up the gradient using Illustrator's eyedropper tool, I would draw a rectangle the size of your artboard and fill the rectangle with the gradient.
Then draw a second rectangle of the same size and fill it with white.
Now draw a circle on top of the white rectangle at the location of one of the circles in your sample image. Select the white rectangle and the new circle, and use the pathfinder tool to "Exclude" or "Minus Front."
This creates a compound path, which causes Illustrator to treat the circles as if they were holes cut through the white rectangle, allowing the gradient-filled rectangle at the bottom of the stack to show through.
If you use the "Exclude" command, you can create all of the circles first, and use the Exclude tool on all of them at once. Make sure that all of the circles are on layers above the white rectangle, and that you select all of the circles AND the white rectangle before using the Exclude command.