That's gold filigree laid into the handle.

在刀柄处镶有金子。

They made two gold filigree settings and two gold rings, and fastened the rings to two of the corners of the breastpiece.

又作两个金槽和两个金环，安在胸牌的两头。

They mounted the onyx stones in gold filigree settings and engraved them like a seal with the names of the sons of Israel.

又琢出两块红玛瑙，镶在金槽上，仿佛刻图书，按着以色列儿子的名字雕刻。

Engrave the names of the sons of Israel on the two stones the way a gem cutter engraves a seal. Then mount the stones in gold filigree settings

要用刻宝石的手工，仿佛刻图书，按着以色列儿子的名字，刻这两块宝石，要镶在金槽上。