A 10.03ct Fancy Brown-Pink diamond, valued at HK$3.1 million (US$395,000) to HK$5 million, which will be offered at Bonhams Hong Kong’s Rare Jewels and Jadeite auction. Photo: Mark French 

5 factual ‘gems’ we learned from coloured-diamond masterclass 

Value of yellow diamonds is on the rise, while red diamonds are rarest, says Bonhams Hong Kong ahead of Rare Jewels and Jadeite auction on May 27  

Topic |   Diamonds as an Investment

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A 10.03ct Fancy Brown-Pink diamond, valued at HK$3.1 million (US$395,000) to HK$5 million, which will be offered at Bonhams Hong Kong’s Rare Jewels and Jadeite auction. Photo: Mark French 
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