Number + 克拉 + Noun
The measure word 克拉 (kèlā) means 'carat,' a unit of weight used for gemstones and diamonds. It is placed after a number to specify the weight of a precious stone. One carat equals 0.2 grams.
她的订婚戒指上有一颗两克拉的钻石。
Tā de dìnghūn jièzhi shàng yǒu yì kē liǎng kèlā de zuànshí.
Her engagement ring has a two-carat diamond on it.
这颗宝石只有半克拉,但颜色非常好。
Zhè kē bǎoshí zhǐyǒu bàn kèlā, dàn yánsè fēicháng hǎo.
This gemstone is only half a carat, but the color is excellent.
一克拉的钻戒现在大概多少钱?
Yì kèlā de zuànjiè xiànzài dàgài duōshao qián?
How much does a one-carat diamond ring cost nowadays?