ruby - RMagick remove white background from image and make it

I need to remove the white background from this image and make the background transparent. So it's just a black tick on the transparent background exported as a png. e.g. Turn Into Any ideas?

Remove the background from an image with this Linux command

How to Use Ruby Functions for Image Manipulation

Premium PSD 3d illustration of red ruby isolated on transparent background

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image processing - remove white background with ImageMagick but not the white inside picture? - Stack Overflow

Autogenerate and store images with Rmagick and Imagemagick with ActiveStorage

Autogenerate and store images with Rmagick and Imagemagick with ActiveStorage

Autogenerate and store images with Rmagick and Imagemagick with ActiveStorage

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Ruby. 3d Image. Isolated White Background. Stock Photo, Picture and Royalty Free Image. Image 76966659.

Autogenerate and store images with Rmagick and Imagemagick with ActiveStorage

How to Use Ruby Functions for Image Manipulation