Help Identifying Sweater

[Aimee]

Any help dating this sweater would be much appreciated. Also, does anyone know what the pattern of the knit would be called?

Also, what type of neckline?

 

[bycinbyhand]

It's a variation of the Diamond Stitch. Looks early 80s.

 

[Rue_de_la_Paix]

I see 1970s.

 

[PastPiecesVintage]

I see early 80s. This pin suggests it's a sweetheart neckline.

https://www.pinterest.com/pin/60798663699497682/

 

[poppysvintageclothing]

I see 1970s with the high ribbed waist and the puffed sleeve shoulder line. Don't really know how to describe that pattern exactly...maybe diamond shaped cable?