lautarite

例句：

1. 1. The gemstone is named after the mineral it is made from.
   这种宝石是以它所来自的矿物命名的。
2. 2.The diamonds in this necklace are all natural and rare.
   这个项链上的钻石都是天然的并且非常稀有。
3. 3. The crystal ball was a popular gift at parties during the Victorian era.
   水晶球是维多利亚时代派对上流行的礼物。