Disallowed !!!, page-46

I think you should spend some more time reading the announcement and the prices stones like this sell for. The cut yield depends on the stone and the skill of the cutter, but the final yield are in the range of 30% to 70% (i.e. 7.5 to 17 carats). Look down the sale price of stones of this size and do the maths again.

• 10.05ct Ratnaraj Ruby sold for US$10,000,000 in November 2016 in Hong Kong. Third highest price per carat for a ruby of US$1,017,557.
• 15.99ct Jubilee Ruby sold for US$14,165,000 in April 2016. Most expensive coloured gemstone sold in the USA in history.
• 15.04ct Crimson Flame Ruby sold for US$18,382,385 in December 2015 by Christies in Hong Kong
• 25.59ct Sunrise Ruby sold for US$30,335,698 in May 2015 setting the current world record for ruby. Most expensive Cartier jewel ever auctioned.
• 8.62ct Graff Ruby sold for US$8,372,094 in Nov 2014 at the Sotheby’s Geneva auction. Held the record for the highest US$ per ct value for a brief period up to May 2015
• 32.08ct Hope Ruby sold for US$6,736,750 in May 2012
• Van Cleef & Arpel’s 8.24ct Ruby and Diamond Ring sold for US$4,226,500 in in December 2011
  setting a then record. The ring was as a gift by Richard Burton to Elizabeth Taylor and was auctioned as part of her jewellery collection.

Not that it matters, but they have recovered 6,221cts of rubies and corundum. 5,406cts have been shipped to the USA.