Blue onyx tiles, in their natural form, are not commonly found in Iran. However, it is possible to obtain blue onyx tiles by cutting them from painted blue onyx slabs. Due to the scarcity of natural blue onyx, the painted slabs offer an alternative to incorporate the captivating blue color into tile designs. These painted slabs are carefully selected and treated to achieve the desired blue hue, allowing for the creation of blue onyx tiles. While the color is artificially enhanced, this method provides designers and homeowners with the opportunity to incorporate the beauty of blue onyx into their projects, even if natural blue onyx tiles are not readily available.