Program aims to educate young consumers about mined stones’ positive qualities.
Group sales down 20% year on year in fiscal first quarter.
Average price falls 39% to $74 per carat in second quarter.
First-half sales and profit drop amid weak diamond market.
Shipments to Japan overtake China and Hong Kong in June.
Overall revenue down 18% year on year in fiscal first quarter.
Company sees deficit of $3.4 million for 12 months that ended March 30.
Revenue for first half down 14% year on year.
226 companies closed in the second quarter, compared to 172 a year ago.
Move will help miner better manage working capital and preserve cash in weak market, it said.
Customers will be able to refuse certain rough diamonds or sell them back.