agate bead

例句：

1. 1.The agate is a beautiful stone thathas been used for centuries in jewelry making.
   这块石英石是一块美丽的石头，几千年来一直用于珠宝制作。
2. 2. The agate was found in the riverbed andwas believed to have healing properties.
   这块石英被发现在河床里，人们相信它具有治疗作用。
3. 3. Theagate was polished toa high shine and set intothe center of the necklace.
   这块石英被打磨得非常光滑，镶嵌在项链的中心。