A model demonstrates a piece of award winning pearl jewelry designed by a Chinese designer Yang Zhe, titled "Rotation" in Hong Kong, south China, March 7, 2011. The awarding ceremony for the 8th International South Sea Pearl Jewelry Design Competition was held on Monday during the on-going Hong Kong International Jewelry Show 2011 (HKIJS), with more than 700 designs competing in 7 categories. All winning designs will be put on display during the HKIJS.