Task: Translation
Input (Czech): Barevná skla bez obsahu sloucenin olova a barya s indexem lomu vyšším než 1,52 a mernou hmotností nejméne 2,52 g.cm.sup.-3.n., vhodné zejména pro rucní výrobu vysoce kvalitního stolního a užitkového skla vyrábeného v plynových a elektrických tavicích zarízeních. Barevná skla zahrnují základní krištálové sklo, které obsahuje v % hmotn.:  65,5 až 70,5 SiO.sub.2.n. až do 2,0 Al.sub.2.n.O.sub.3 .n.a/nebo až do 2,0 B.sub.2.n.O.sub.3 .n.0,5 až 5,5 La.sub.2.n.O.sub.3 .n.1,0 až 5,0 SrO 5,0 až 9,0 CaO až do 2,0 MgO 6,0 až 10,0 Na.sub.2.n.O 8,0 až 12,0 K.sub.2.n.O 0,2 až 0,6 Sb.sub.2.n.O.sub.3 .n.a dále muže obsahovat až do 4,0 % hmotn. ZnO a pritom  suma Al.sub.2.n.O.sub.3 .n.a B.sub.2.n.O.sub.3 .n.je do 4 % hmotn.,  suma K.sub.2.n.O a ZnO je vyšší než 10 % hmotn., a  suma La.sub.2.n.O.sub.3.n., SrO a CaO je vyšší než 12 % hmotn.,  pricemž dále obsahuje, nad 100 % hmotn. tohoto základního krištálového skla, prídavek alespon jedné z následujících barvicích složek, a to jednotlive nebo v kombinaci, v % hmotn.  do 3,0 Nd.sub.2.n.O.sub.3 .n.0,5 Er.sub.2.n.O.sub.3 .n.0,02 CoO 1,5 CuO 0,3 Cr.sub.2.n.O.sub.3 .n.2,0 Fe.sub.2.n.O.sub.3 .n.0,5 Se 0,5 Na.sub.2.n.SO.sub.4 .n.0,5 C.
Output (English): In the present invention, there is disclosed a colored glass free of lead and barium compounds with refraction index greater than 1.52 and with specific weight of at least 2.52 g.cme-3, suitable particularly for handmade table and domestic glass of superior quality, produced in gas and electric melting units. The colored glass of the present invention consists of base crystal glass containing: 65.5 to 70.5 percent by weight of SiOi2; up to 2.0 percent by weight of Ali2Oi3 and/or up to 2.0 percent by weight of Bi2Oi3; 0.5 to 5.5 percent by weight of Lai2Oi3; 1.0 to 5.0 percent by weight of SrO; 5.0 to 9.0 percent by weight of CaO; up to 2.0 percent by weight of MgO; 6.0 to 10.0 percent by weight of Nai2O; 8.0 to 12.0 percent by weight of Ki2O; 0.2 to 0.6 percent by weight of Sbi2Oi2; and further it may contain up to 4 percent by weight of ZnO and where; the sum of Ali2Oi3 and Bi2Oi3 is up to 4 percent by weight, the sum of Ki2O and ZnO is higher than 10 percent by weight, and; Lai2O3, SrO and CaO is higher than 12 percent by weight; whereas furthermore the glass contains, above 100 percent by weight of this base crystal glass, an addition of at least one following coloring compositions alone or in combination: up to 3.0 percent by weight of Ndi2Oi3; 0.5 percent by weight of Eri2Oi3; 0.02 percent by weight of CoO; 1.5 percent by weight of CuO; 0.3 percent by weight of Cri2Oi3; 2.0 percent by weight of Fei2Oi3; 0.5 percent by weight of Se; 0.5 percent by weight of Nai2SOi4; and percent by weight of 0.5 C.