One of the Rarest and Most Valuable Colours of Diamond All natural fancy coloured diamonds are very rare and expensive. Pink is one of the rarest and most desirable colours. The Darya-i-Nur diamond is the...
Diamond - Technical General Information Brief technical, scientific, historical notes about diamonds, plus quality and price factors, simulatns, synthetics. What is Diamond? - Diamond is Carbon ...
Blue Diamonds Blue diamonds are one of the rarest and most valuable gemstones in the world. All natural fancy colours are rare, most jewellers have never seen a natural blue diamond, because they are so...