Patent ID: 7393802

Claim:
An ultraviolet/infrared absorbent low transmittance glass consisting of base glass comprising: 65 to 80 wt. % SiO 2 ; 0 to 5 wt. % Al 2 O 3 ; greater than 2.1 to less than or equal to 10 wt. % MgO; 5 to 15 wt. % CaO wherein a total amount of MgO and CaO is 7 to 15 wt. %; 10 to 18 wt. % Na 2 O; 0 to 5 wt. % K 2 O wherein a total amount of Na 2 O and K 2 O is 10 to 20 wt. %; and 0 to 5 wt. % B 2 O 3 , and colorants comprising: 1.25 to 2.2 wt. % total iron oxide (T-Fe 2 O 3 ) expressed as Fe 2 O 3 ; 0.001 to 0.018 wt. % CoO; 0 to 0.0004 wt. % Se; and 0.028 to 0.2 wt. % NiO, wherein said glass has a turquoise blue or deep green color.