Photo: Jonathon Kambouris

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Old School: All your jewelry should be the same metal.

New Rule: Matchy-matchy is boring-boring. Mix silver and gold for an effortlessly stylish look. Pair chunky pieces like this watch with delicate bling.
From top:
Bracelets, Maya J. $99 to $160;
Watch, $395;
Bracelet, $200;
Bracelets, Maya J,, $199 and $140;
Bracelet, $75;