These aren't all sites I ordered samples from ... but they all have a lot to choose from, so might have what you are looking for!
Pearl jewelry: freshwater pearls, Akoya pearls, Tahitian pearls, South Sea pearls.
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Quality Pearls, Pearl Jewelry, Pearl Necklaces
Handcrafted custom jewelry, swarovski crystal necklaces, genuine pearl sets, bracelets
Bridal Jewelry at Amys Bridal Accessories: Couture Bridal Jewelry, Bridesmaid Jewelry & Bridal Tiaras that are completely customizable and unique