Jeweler will also close at least 50 stores in China this year.
Lulo mine sales up 6% despite temporary shutdown due to blockades.
Company posted $3.3 million deficit in first quarter, compared to profit of $1.1 million a year ago.
Customers likely to refuse goods, sources say.
Gap in shoppers’ understanding of natural vs. synthetic diamonds is narrowing, according to Plumb Club.

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