vescalin

例句：

1. 1. The vescalin is a rare and valuable gemstone.
   这个宝石非常稀有且价值连城。
2. 2. The vescalin has been used in ancient civilizations for its healing properties.
   这种宝石在古代文明中被用于治疗疾病。
3. 3. The vescalin was discovered by a team of scientists who were searching for new materials.
   这个宝石是由一支寻找新材料的科学家团队发现的。