Needing some help on a couple welding lenses please!!

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I bought 2 Green Diamond Gold lenses the other day and the lense has gold front with about  1/8in of top and bottom of lense is black.. and it has Athermal written along the width side of the front of the lense. Okay, a couple buddies at work said their lenses were green diamond gold but theirs do not look the same. Theirs are gold front and about a 1/8in black running up the width side of the lense, theirs do not have athermal written on it. Their lense has heat numbers written with about 1/4in-3/8in letters along the bottom of the front side of the lense.. I'm trying to figure out if the lenses I bought are true green diamond gold, or if theirs is the actual green diamond gold, or if theirs is something different. By the way, looking thru my lense is sees Yellowish/Gold Arc, thru theirs, the Arc is more of a white/silver/blue color Arc.. If anyone can give me some help here, please do so. It will be much apprecaited.. Thank you, if you need more info or pics so see what im talking about I can make that happen too... Just let me know. Have a nice day all..