Optical glass and optical component having a desired optical constant and excellent stability during reheating

The present invention provides an optical glass having a desired optical constant and excellent stability during reheating, and an optical component made of the optical glass. The optical glass has an Abbe number [nu]d of 36.40 or more, and has a SiO2 content of 25 to 55% by mass, a B2O3 content of 13% by mass or less, a Li2O content of 20% by mass or less, a Na2O content of 17% by mass or less, a ZrO2 content of 2 to 22% by mass or less, and a Nb2O5 content of 12 to 42% by mass or less, in which a mass ratio [(SiO2+B2O3+P2O5)/(Nb2O5+TiO2+Bi2O3+WO3+Ta2O5)] of the total content of SiO2, B2O3 and P2O5 to the total content of Nb2O5, TiO2, Bi2O3, WO3 and Ta2O5 is 2.00 or less, a mass ratio [R2O/(R2O+RO)] of the total content R2O of Li2O, Na2O and K2O to the sum of the total content RO of MgO, CaO, SrO, BaO and ZnO and the total content R2O is 0.60 or more, the total content of SiO2, B2O3, P2O5, Li2O, Na2O, K2O, MgO, CaO, SrO, BaO, ZnO, TiO2, Nb2O5, WO3, ZrO2, La2O3, Gd2O3, and Y2O3 is 93% by mass or more, and a m