What is diamond painting? Recently, I came across the Craft-Ease website, which sells a huge range of gorgeous Paint by Number kits and Diamond Painting kits. It got me interested in their diamond painting kits range! I had not seen them before and neither had my friends that I spoke to. Diamond painting is a combination of cross-stitch and paint-by-numbers, by using an applicator to apply hundreds of shiny round coloured diamonds on an adhesive colour-coded canvas painting! The result is astonishing!