Cristallo Azul or “Cristallo Blue” with color treatment is a popular choice for indoor kitchen countertops because of its unique color and texture. It can add a touch of elegance and sophistication to any kitchen design. The addition of a “color treatment” likely refers to a process in which the stone’s color is altered to achieve a specific desired hue or tone. In general, color treatment is a common practice in the natural stone industry to enhance the appearance of the stone and make it more appealing to customers.