Van Cleef Diamond Necklace Worth Millions Stolen from Vienna Museum
Jewel was from the collection of Queen Nazli, former queen mother of Egypt.
Country overtook Botswana in 2023.
Miner appears to be shifting strategies at first sale under new contract.
European company aims to increase transparency and efficiency throughout supply chain.
Documentation, care plans and protection are among the offerings younger shoppers want from a jeweler.
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