ST. JOHN evening black knit cardigan with diamond silver buttons SZ 12

1980s 1990s vintage fancy cardigan, with a nice v neck. Made by designer St. John. A company known for their knitwear suits. Missing 1 or 2 gems on one button. Price reflected. Tag says size 12. Made in the US. Styled up the cardigan with other things from the shop that pairs well in second to last photo.