As one may expect of a Dynasty characterized by ceramic excellence indeed the pinnacle of a civilizations history the Jun ware of the Henan Province are truly a pleasure to behold. The emphasis of formal perfection may be seen in this example from the Freer collection emphasized by the delicate blushes of color from the rich glaze. Produced during the Dynasty following the Song the ability to maintain such excellence across the generations adds depth and breadth to the quality of this piece. Achieved through thick application and diffraction of light amongst countless tiny bubbles in the glass the blue color subtly shifts as thickness changes allowing the clay body to be seen near the rim where the glaze is thinnest. A splash of purple from a copper based pigment breaks up the blue and adds drama to the glaze without taking away from the overall simplicity and elegant beauty.