The data on the synthesis of lead-free glasses for high-quality dishes are presented. Glasses of the SiO 2 - SnO 2 - BaO - CaO - Na 2 O - K 2 O system at mass SnO content 2 2 - 10%. The effect of the combined introduction of BaO and SnO 2 on the crystallization ability, density, LTEC, refractive index, microhardness of glasses has been studied. For high-quality sorted glasses, compositions with a BaO content of 6 - 8% and SnO 2 4 - 6% are recommended. The refractive index of the obtained glasses is 1.540 - 1.550, microhardness 3700 - 4900 MPa, TLEC - (95 - 98) * middot; 10 -7 K -1 .
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