Translucent [...] rare

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Provided is a transparent rare earth aluminum garnet ceramic that has a high light transmission rate and can be mass produced. The transparent rare earth aluminum garnet ceramic is represented by general formula R 3 Al 5 O 12 (R is an element selected from the group consisting of rare earth elements having an atomic number of 65 to 71) and comprises Si and Y as sintering aids, or is represented by general formula R 3 Al 5 O 12 (R is an element selected from the group consisting of rare earth elements having an atomic number of 65 to 70) and comprises Si and Lu as sintering aids.