The necklace consisted of amethysts set in gold.

这条项链是金镶紫水晶的。

The ivory horns were heaped with purple amethysts, and the horns of brass with chalcedonies and sards.

象牙角杯中堆着紫水晶，黄铜角杯里堆着玉髓和肉红玉髓。