PORCELAIN COMPOSITION

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A ceramic composition includes a glass composition and a filler including at least one of Al2O3 and TiO2, wherein the composition of the ceramic composition includes 0.15 to 0.55 mol of a, 0.45 to 0.85 mol of b, 0.01 to 0.2 mol of an oxide RO of an alkaline earth metal element R, and 0.1 to 0.4 mol of the filler, wherein a represents a molar quantity of an oxide Ln2O3 of a rare earth element Ln, b represents a molar quantity of boron oxide B2O3, and a + b = 1 mol.