umburana

例句：

1. 1. The umburana is a rare and valuable gemstone.
   乌布瑙是一种稀有且珍贵的宝石。
2. 2. The umburana has been used in ancient civilizations for its healing properties.
   乌布瑙在古代文明中被用于其治疗性质。
3. 3. In the umburana industry, the focus is on creating high-quality jewelry pieces.
   在乌布瑙行业中，重点是创造高质量的珠宝作品。