2--OK.How about this diamond necklace?

1--I prefer a diamond mounted in a ring.

2--Then. I'm sure you will like this one.

1-- Do you guarantee its quality?

2--Sure. This is the warranty. The cut,color, clarity, weight and the manufacturer of the diamond are all indicated in this document.

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注解：

1.necklace项链

2.mounted安装在…上的  

3.guarantee保证

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译文：

1--请推荐一颗钻石给我，好吗?

2--好的。您觉得这条钻石项链怎么样?

1--我比较喜欢镶在戒指上的那种。

2--好。我敢说你一定会喜欢这一种。

1--你保证品质吗?

2--当然。这是保证书，切割、色泽、清亮度、重量和制造商全都记载在这张文件上。