Cartier blue balloon scale drill is better. The scale diamond is single refraction, showing a good metallic luster, and the polished diamond surface is smooth. The metallic luster of Roman diamonds containing impurities is dark, and some of them contain birefringence. Cartier has long been committed to promoting the development of jewelry and watch industry, insisting on inclusiveness and curiosity, and showing unique beauty with ingenious masterpieces. Cartier's works cover jewelry, high-grade jewelry, watchmaking, perfume, leather goods and accessories, combining exquisite craftsmanship with classic design to interpret meaningful style. At present, Cartier has 270 boutiques around the world.