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Bonham’s to auction Hope Spinel for the first time in 98 years.

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The “Hope Spinel,” once owned by the world’s greatest gem collector Henry Philip Hope, whom also owned the Hope Diamond, until his death in 1839.

The rare British owned gemstone which is steeped in history and intrigue is to be offered for sale for the first time since 1917, when it sold for £1,060.00, which is the equivalent of £80’000.00 in today’s money.

The auction is likely to be one of the most eagerly-anticipated jewellery events of the year. Interest is high among collectors, jewellery lovers and those looking to invest in a unique jewel. Auctioneer Bonham’s is expecting bids in the region of £150,000 to £200,000 for the treasure.

Set in a 19th century silver and gold brooch, the huge 50.13 carats octagonal-cut stone is the size of a small plum and of similar colouring with a splendid rose hue.

The incredible transparency and impeccable cut of the Hope Spinel mean it is classed as an "exceptional treasure" - but its provenance is equally fascinating.