Geneva — An exceptionally rare blue diamond went under the hammer in ... The non-round shape of the cut gemstone is what's referred to as "fancy" in the jewelry world, while its color clarity ...

Many such moments have solidified diamonds and other gems as rare, invaluable goods that one must possess. For example, many diamond ... The cut of the stone dictates how much light is reflected ...

What gives gemstones colors ... When nitrogen is present in pairs or groups within the diamond, it can absorb blue light, ...

The latest blue diamond ... a planning and cutting process that last six months. The diamond’s carefully positioned triangular- and kite- facets help it reflect the light, giving it that classic ...

considered one of the most important blue diamonds ever discovered. Sotheby’s expects it to be auctioned off at $20 million in May. A 40.29-carat radiant-cut fancy light pink diamond ring ...

To be sure, the auction house’s High Jewelry Sale, taking place on Tuesday, May 13 in Geneva, will offer up a slew of gems certain ... 5.83-carat oval fancy light blue diamond with heart-shaped ...