This is cubic zirconia that I got from a costume shop.

这是人造钻石从服装店买来的。

He talks us through how the industry ended up here, and for the record, these are cubic zirconia.

他讲述了这个行业是如何走到这步的，郑重声明， 这些是立方氧化。

I think some people believe that laboratory-grown diamond means fake diamond, that it's cubic zirconia, or Moissanite, that it's some sort of diamond simulant.

认为有些人认为实验室培育的钻石意味着假钻石，认为它是立方氧化，或者是莫桑石，它是某种钻石模拟物。