Usually, bigger as well as, rounder pearls contain overtones and are obviously measured to be more expensive and stylish. The individuality and innate aura of black pearl jewelry makes them wonderful gifts to elevate the importance of every occasion.
While in WWII my father sent home a necklace. On the box it says "Handmade black pearl necklace, purchased while he was in Italy." It is black with orange beads between pearls shapes. It looks more like mother of pearl to me, but the black color throws me off. The pearls could be genuine, but to be sure you really need to get a professional evaluation either by an estate jewelry appraiser or gemologist.
Another way to tell if they are genuine is to rub a pearl against your teeth. If it is smooth, it is not genuine. Pearls will always have a roughness that you can't detect visually. The orange beads could be coral. If they are genuine black pearls, their value would depend on size, quality and color. Something only someone with a "hands-on" examination could determine.
Are you familiar with jewelry? Hong Kong's jewelry is famous in the world of wholesale pearl strands supply centre. Each year, many jewelry shows are held in HK. Guangzhou City in South China become Hong Kong's largest jewelry manufacturing base in the mainland as many Hong Kong twisted pearl necklace makers have moved to the area in an effort to find low cost and skillful craftsmen. In Guangzhou you can find what you need you can find freshwater pearl beads, cheap pearl strands, sterling silver pendant, tin cup necklace, cultured pearl bracelet, cultured pearl ring, cheap pearl earing, sterling silver jewelry, wholesale pearl pendant, coral bracelet …to meet your taste.
I'm going to sell an antique strand of pearls and a potential buyer asked to know how the pearls were "signed". Generally in old items and even some new, signed simply means some means of identification of the maker or designer. On antique glassware for example, a signature mark may be pressed or cut into the glass. Some antique costume jewelry is "signed" with a makers mark and that does increase the value if the maker is among the popular ones at the time.
