According to our Rarity Evaluator this rare diamond receives a “One of-a-kind” grade. New pink (or purple pink) diamonds in the intense grade above 5 carat come into the market once every few years. Internally flawless pink diamonds represent 7% of all pink diamonds
This 5.03 carat Fancy Vivid Green diamond is one of the largest Vivid Green diamonds seen at auction in recent years. Though the GIA generally employs softer grading criteria when determining a stone’s intensity level, this Vivid Green diamond exhibits a relatively high inner grade (grade 3).
Noticeable discrepancies between live and in person auction house diamonds can create a bit of controversy. When a customer buys a high quality, fairly priced stone in retail and later sees what appears to be a comparable stone in an auction catalogue for a significantly lower price, it disappoints the owner.
Whether you are a diamond dealer or a sales person in a jewelry store, the 4C’s system is the first and only methodology used for classifying colorless diamonds. Efficient and easy to employ, each category in the system has its own hierarchy. Once its basic principles are understood, anyone can evaluate a colorless diamond accompanied with a report.
Although this article does not discuss fancy color diamonds it is a relevant topic for all diamond industry professionals, as this phenomenon is very common in fancy color, particularly in pink diamonds.
The romance around Type IIa diamonds first began when scientists found a link between diamonds sourced from the legendary Golconda mine in India and the fact that stones hailing from this area were commonly Type IIa. As we all know by now, the collective assumption is that Type IIa diamonds – which are distinguished for their absence of nitrogen – are known to be more ‘white’ than most D color diamonds.
On November 11th, Sotheby’s will feature ‘The Blue Moon’, a 12.03 ct, cushion cut, Fancy Vivid Blue, IF diamond. Only once every three or four years do we see an important blue stone of this caliber at auction. The high estimate is $4.5 million per carat.