By Åse Anderson in London
Calm and serene, blue is the colour of the ocean and the sky. It
is also associated with harmony and faithfulness, making it the
perfect hue for a diamond engagement ring.
Natural blue diamonds are extremely rare, accounting for less
than 0.1 per cent of the world's diamonds. As a result, blue
diamond engagement rings carry astronomical price tags, placing
them at the very pinnacle of luxury.
The Hope diamond, which is on display at the Smithsonian
Institution in Washington D.C., is the most famous blue diamond in
the world and the largest at 45.52 carats. The thwarted Millennium
Dome Diamond Raid in November 2000 was an attempt to steal 11 rare
blue and one white diamond - the Millennium Star - valued at a
total of £200 million.
Blue diamond engagement rings can vary in colour from intense
dark blue to more greeny aquatic shades. The remarkable blue colour
is formed from minute traces of boron or large amounts...