Most orange diamonds are found in one of two places: the Argyle mine in Australia or South Africa.
What gives these stones their unique hue is the presence of nitrogen - which is the same element responsible for the color in yellow diamonds. According to the Natural Colored Diamond Associa- tion, nitrogen atoms must be grouped in a hyper-specific way while the diamond is forming. When they are situated in this particular arrangement, they absorb blue and some yellow light, thus produ- cing an orange appearance.
The Pumpkin Diamond is a diamond measuring 5.54 carats (1.108 g) rated in color as Fancy Vivid Orange by the Gemological Institute of America. it was bought by Ronald Winston of the House of Harry Winston for the price of $1.3 million. It is currently estimated to be valued at $3mio.
The Orange, a 14.82-carat fancy vivid diamond with VS1 clarity, smashed records when it hit the Christie’s Geneva auction block. It hit a jaw-drop- ping $35.5 million dollars, or $2.4 million per carat