SINGLE FAT QUARTER: Vintage Fabric 1980s? Light Weight Pure Silk in Black, Blue, White 44cm x 50cm

Fabric: at first glance this fabric looks to be 1960s vintage, but I'm fairly sure it's a 1980s piece as silk was the go to fabric in the earlier parts of the decade for so many apparel pieces and the 1960s was the home of faux silk. Striking black, white and blue swirls throughout. Burn test confirmed this is pure silk. Please note the photos are of a longer piece of fabric.
Hand/Weight: very light weight, tightly woven, not sheer, can't hold its own weight.
Fibre: silk
Era: 1980s?
Condition: unused, unwashed.
Size: this piece is 44a vintage fat quarter size measuring 44cm wide x 50cm long.