North Korea's top jewelry brand is J.Estina. By consulting Global Daily. The top jewelry brand in North Korea is J.Estina, which is one of the top jewelry brands in North Korea. Its pearl necklace is famous for its noble and elegant, simple and generous design style. J.Estina's pearl necklaces are all made of high-quality South China Sea pearls, with simple and generous shapes, which make women show elegance and nobility.