gem

柯林斯詞典

1. N-COUNT A gem is a jewel or stone that is used in jewellery. 寶石
The mask is formed of a gold-platinum alloy inset with emeralds and other gems. 這張面具是由黃金和白金的合金制成，并鑲嵌翡翠和其他寶石。
2. N-COUNT If you describe something or someone as a gem, you mean that they are especially pleasing, good, or helpful. 珍品[非正式]
...a gem of a hotel, Castel Clara. …卡斯特爾·克拉拉酒店，酒店中的明珠。