Hi there, I have a totally newbie question to ask. Why are fancy cut diamonds so much cheaper than the round diamonds? I did my research and found that prices could be twice as cheap for a fancy shape like pear or oval when compared to the round brilliant cut stones. Hope you can shed some light on this.
Hi Erika, you are right. Fancy shaped diamonds are prices less per carat than the round diamonds. There are quite a number of reasons behind this.
This is a very simplistic diagram that explains this. In reality, most rough diamonds don’t come in nice shapes like this. But you get the idea. To get a round brilliant diamond, you need to remove the most amount of material from the rough.
Oversimplified view of diamond cut from rough
In nature, most rough diamonds mined from the ground contain inclusions inside them. Sometimes, a piece of rough might have inclusions that can get in the way of using the rough efficiently. As a result, the rough diamond would sell for a lower price.
Planning a Rough Diamond
Sometimes, roughs are purchased and the cut is manipulated in a way that the most severe inclusions are removed during the polishing process. For example, the rough crystals for heart shaped diamonds usually have a severe inclusion found in the area between the clefts.
That’s why the shape in which a diamond is cut to is usually chosen based on achieving a diamond with better clarity without losing too much carat weight. This makes the stone much easier to sell as opposed to having a diamond with eye-visible inclusions in it.
If you are observant, you would realize that there is about a 10% difference in price between the 2 round cut diamonds. One of them has Hearts And Arrows patterning and the other doesn’t. In order to achieve the tighter proportions and placements of individual facets, more rough is removed and the price is reflective of that.
To conclude, the bottom line here is that fancy shaped diamonds conserve more weight when they are cut and the lower costs involved in the manufacturing process are passed on to the consumer.