I love Cate Blanchett (still dying over her opal Chopard earrings from last year) but this Tiffany turquoise necklace is not doing it for me now.
It doesn’t do much for the dress and frankly, it looks a bit too casual for the occasion, despite the profusion of strands an it seems like it’s wearing her. But hey, points for at least doing it!

Could not agree more.
I think it’s the black fabric of the dress at the top of the necklace … and just too stark a contrast. Had she worn this with yellow, and a round or crew neck … wow. Love the necklace, love Cate. Just not together in this combo.