A 4.01-carat Pigeon’s Blood Burmese ruby and diamond ring © Bonhams © Mark French Photography
An 8.56-carat no-oil Colombian emerald and diamond ring © Bonhams © Mark French Photography
A 12.92-carat unheated Kashmir sapphire and diamond ring © Bonhams © Mark French Photography
A 10.03-carat Type IIA fancy brown-pink diamond © Bonhams © Mark French Photography
A wide array of coloured gemstones and fancy colour diamonds are expected to command attention at Bonhams’ upcoming Rare Jewels and Jadeite sale in Hong Kong on May 27.
Headlining the lots is a 4.01-carat Pigeon’s Blood Burmese ruby and diamond ring, which is valued at HK$3.5 million to HK$5 million or around US$445,000 to US$635,000. The ring is accompanied by reports from leading gemmological laboratories.
Another highlight of the sale is an 8.56-carat no-oil Colombian emerald and diamond ring with a pre-sale estimate of HK$5 million to HK$6 million or around US$635,000 to US$765,000.
Bonhams Asia Director of Jewelry Graeme Thompson commented, “The market has experienced the biggest price increases for emeralds and rubies which respectively have seen a 1,900 percent price increase for emeralds and a 1,100 percent increase for rubies in the past 10 years.”
The sale will also feature a 12.92-carat Kashmir sapphire, which was recently discovered in a bank vault. The ring is estimated to fetch between HK$950,000 and HK$4 million or about US$120,000 to US$510,000.
“Kashmir sapphires are the rarest of gemstones and collectors are prepared to pay princely sums for top-quality specimens. Sapphires have experienced a 970 percent price increase over the past decade,” noted Thompson.
A collection of rare fancy colour diamonds, including a 10.03-carat oval-cut fancy brown-pink diamond valued at HK$3.1 million to HK$5 million (around US$395,000 to US$636,000), will also be auctioned off.
Signed jewellery pieces from Van Cleef and Arpels, Cartier, Harry Winston, Graff, Chopard and Bulgari are also on the auction block, note the company.