Culture Round Bluish Pearls Necklace of 8mm. After making a few pieces of different types of necklace, you may like to pay a visit to your local bookshop. Search for books with reference to design work or art & craft for jeweler in the making. You can try using a fishing bait string to make the design as it will last longer and will not break easily. For the crystals and metal material will depend on how much your budget is as we can also use silver.