UK-based tender house Bonas is holding a one-off clearance sale of polished coloured gemstones with a total weight of 200,000 carats at the September Hong Kong Jewellery & Gem Fair. The exceptional pieces include 60 parcels of rubies (60,000 carats), 350 parcels of emeralds (70,000 carats), 150 parcels of blue sapphires (20,000 carats) and 15 […]

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