SINGAPORE - It is not one in a million - more like one in 100 million.
That is how rare the 50.55-carat diamond at this year's Singapore International Jewelry Expo is.
The white diamond from DeGem sparkles with clear brilliance and is nicknamed The White Fire for its colourlessness and purity.
Ms Au Yeong Siew Pheng, marketing manager of DeGem, explained why such a large diamond is rare: "It is not easy to get a rough, unformed diamond that is large enough to cut a 50-carat diamond."
Rough diamonds can lose about half their weight after cutting.
"You can work 10 years in the industry and not be able to hold such a big diamond of this quality," she said.
Diamonds of this size are usually set as pendants or on crowns. The one from DeGem is set as a ring and is retailing at US$10 million (S$12.5 million).
On the cutting process, Mr Yosi Fozailoff, an experienced diamond-cutter, told The New Paper: "My factory in Israel receives diamonds from a London syndicate, which controls around 70 per cent of the diamonds from around the world."
"They pass us a sack of diamonds every month and we don't know what is inside. We just trust them. Then we sort the diamonds and decide what shapes to cut them into."
The 66-year-old, who is president of Fozailoff Jewelry, learnt how to cut diamonds from his father when he was 15.