Strengthened microcrystalline glass having high scratch resistance

A strengthened microcrystalline glass having a high scratch resistance comprising a compressive stress layer and a tensile stress layer, wherein the strengthened microcrystalline glass has a main crystalline phase of (Zn, Mg)Al2O4;

• the strengthened microcrystalline glass comprises Na2O;
• the strengthened microcrystalline glass has a surface K2O concentration of ≥7.00 wt %;
• and
• along the thickness direction of the strengthened microcrystalline glass, the glass has a depth of ≥0.07 t, which is from any surface of the strengthened microcrystalline glass to a location close to that surface and having the same potassium (K) concentration as that at the center of the strengthened microcrystalline glass, wherein t is the thickness of the strengthened microcrystalline glass.