To provide a dental lithium silicate glass composition capable of providing a dental lithium silicate glass ceramic capable of efficiently precipitating the main crystals (lithium disilicate and/or lithium metasilicate) even after heat treatment.To provide a Al2O3-free dental lithium silicate glass composition including the following components: SiO2: 60.0 to 80.0 % by weight, Li2O: 10.0 to 17.0 % by weight, K2O: 0.5 to 10.0 % by weight, ZrO2: 0.0 to 5.0 % by weight, a nucleating agent: 1.0 to 6.0 % by weight, a glass stabilizer: 0.0 to 8.0 % by weight and a colorant: 0.0 to 10.0 % by weight.
