Why Are Fancy Cut Diamonds Cheaper Than Round Brilliants?

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.

1) Yield of Rough Stone

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.

utilization of rough stone for cheaper diamonds

Oversimplified view of diamond cut from rough

2) Cheaper Rough Stone

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

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.

Here’s a Quick Price Reference for a Comparison

comparing prices of differently shaped diamonds

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.

When buying an engagement ring, inspecting the diamond in full details is mandatory if you don’t want to make costly mistakes. Check out the HD 360˚ diamond videos at James Allen to help you examine details upclose.

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4 Comments

  1. harry n.-
    September 6, 2012 at 12:49 pm

    what do you think of this diamond from James Allen?

    jamesallen.com/diamonds/G-VS1-Good-Cut-Emerald-Diamond-1504176.asp

  2. Paul-
    September 6, 2012 at 3:23 pm

    I think that the stone you chose has lots of potential. The next step is to request an ASET imagery for that stone.

    Read the guide I created for fancy shapes here for a step by step tutorial:

    http://beyond4cs.com/where-to-buy-fancy-cuts/

  3. Cheri Silkman-
    April 21, 2015 at 2:31 am

    I am having an heirloom 4.61 carot diamond recut. It’s an old European Cut in maybe M color but has 2 broken spots on the edge where it broke getting it out of a Mason ring.

    I would VERY much like your opinion on a cut YOU personally recommend. I get one shot at this. Plus it was my Mom’s. I want a pretty memento. I’m getting strong encouragement that the Star 129 would be wonderful.

    I have read that the larger diamonds will be benefited by the more scintillating cut. Does this cut diminish the fire in a diamond? It was hard to tell in the videos.

    I would appreciate your top picks, and your favorite, unless the particulars of my diamond would have you recommend otherwise.

    One last item. I need a setting for my diamond. Do you sell them without the center stone?

    Many thanks,
    Cheri

  4. Paul Gian-
    April 21, 2015 at 12:26 pm

    This webpage contains some information about the Star 129: http://beyond4cs.com/shapes/round/solasfera-vs-star-129/

    Ultimately, what you choose to do with the diamond is really up to your own preference and you can find some information about re-cutting diamonds here: http://beyond4cs.com/cut/repolishing-damaged-diamonds/is-it-worth-it/

    Lastly, I don’t sell settings. Sorry! You might be interested in looking at designs here: http://beyond4cs.com/go/briangavin/

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