Back in January when Nicole wore a ring and these bangles at the 2011 Art Of Elysium Heaven Gala I identified them as Loren Jewels, which is incorrect.
Whilst browsing some photos from Simone Harouche's closet on The Coveteur I found out that they are actually Indo-Prussian jewelry.
"I go to India a lot for work and for a good escape! Another plus side to India is the amazing jewelry and deals you can find. These bangles and rings are Indo-Prussian jewelry. You find a lot of this type of jewelry in India. My friends give me shopping lists of what they want whenever I go", Nicole's stylist said.
As you can see here Loren's bangles look really similar.
img: the coveteur