In addition the diamond industry voluntarily includes a warranty on the invoice of every diamond sold stating it is conflict free, Izhakoff said.

依扎科夫说：作为补充，钻石从业者都自愿对所售钻石做出非冲突钻石的声明保证。

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In addition the diamond industry voluntarily includes a warranty on the invoice of every diamond sold stating it is conflict free, Izhakoff said.

依扎科夫说：作为补充，钻石从业者都自愿对所售钻石做出非冲突钻石的声明保证。

youdao