Bought these for gifts in China. They were relatively cheap, about $21 USD for each necklace. Each necklace contains about 35-36 pearls that are all 12 - 15mm. Some of them are round (most aren't), almost all have blemishes and imperfections. They don't seem that shiny unless you look at them from far away. Could you tell me how much a necklace like this would run for in the United States? Also what would these pearls be classified as?