Kristen Bell is one of the celebrities who've chosen large pendants for press-rich events and personal outings. The center of her yellow-gold floral pendant appears to be crafted from rubies and diamonds -- I'm not sure about the exterior "petals," they don't look like turquoise but I can't get close enough to give a true opinion. They're light blue/green.
The big-link chain holding Kristen's pendant is another popular jewelry trend.
Get Kristen's Look
The pricier choice: a floral pendant made from a South Sea cultured pearl surrounded by diamonds | Buy Direct
The less pricey choice: a floral pendant set with peridot and topaz and set in sterling silver | Buy Direct