1 Carat Diamond Rings – What to Pay Attention To?

1 Carat seems to be the gold standard for diamond rings. Everybody who writes me seems to be looking for a diamond with “at least one carat in weight”. Many of my readers will even try to go for a 1 carat diamond at the expense of the diamond cut (Note: I don’t recommend this).

In this post I want to talk straight with you and tell you about the cons of a 1 carat diamond.

There is nothing really wrong with diamonds above one carat as long as you are aware of the following things.

The Cons of a 1 Carat Diamond Ring

To put it bluntly: The biggest con of a 1 carat diamond ring is the price!

So, what do I mean by that?

Let’s have a look at the database of James Allen.

If we look for round cut diamonds between 0.90ct and 0.99ct we can find 2612 actual results:

2612 Results for Diamonds between 0.90ct and 0.99ct.JPG

Now, that’s fine and dandy.

So, how many results do you think will there be if we only go for diamonds between 1.00ct and 1.01 ct?

It should be way less, right?

Haha, it is exactly the other way around though!

You will find a whopping 3871 diamonds between 1.00 carat and 1.01 carat in weight:


If you don’t believe me click on the pictures yourself to verify!

Why would there be so many more diamonds in the much smaller 1.00 carat to 1.01 carat range?

The reason is quite simple: People want to buy diamonds with at least one carat in weight and thus diamond cutters do their best to fulfill the demand. They will very often sacrifice the diamond cut because they know they can charge way more for a 1.00 carat diamond than for a 0.95 carat diamond with a better cut!

There are some well known magical points where diamond prices suddenly begin to surge. This includes 0.5ct, 1.0ct, 1.5ct but of course also larger diamonds such as 2 carat, 3 carat4 carat or 5 carat diamonds.

Let us just have a look at several diamond prices that can illustrate this issue a little bit further.

We are going to look at 0.9 carat H-colored VS2 diamonds with an Excellent cut grade first:

Prices of 0.9ct VS2 Excellent Cut DiamondsWe can see the Prices beginnning at roughly 4,200 USD.

Now, let us take a look at diamonds with the same 4C characteristics (H Color, VS2 clarity grade and Excellent Cut) but beginning with 1 carat in weight instead of 0.9ct:

Prices of 1.0ct VS2 excellent Cut Diamonds

As we can see prices all of a sudden begin at around 5,600 USD! That is a pretty steep rise in prices for merely 0.10ct in weight.

Also consider that the difference between a 1 carat and 0.9 carat diamond ring is hardly noticeable.

Thus, I am not saying that there is anything wrong with one carat diamonds. I just want you to be aware of the above mentioned facts concerning the prices.

By the way, I think James Allen might currently be the best diamond vendor around due their the 360° videos of all their diamonds in high definition and 20x magnification.
Read More on Diamond Cut

In general it is good to know the points where diamonds tend to rise very steeply. That would be the 0.5ct, the 0.75ct, the 1.ct, the 1.25ct and the 1.5ct mark.

The Pros of a 1 Carat Diamond

So, what would be the pros of buying a 1 carat diamond?

It most likely would be the following:


On a grading certificate you can show that the diamond has above 1,00ct in weight. And of course, you could tell everyone!

Or basically you would not even need to do that because people will ask you anyway 🙂

It is funny how this is one of the first questions that you will be asked when you have a diamond ring.

If you feel like you need any further clarification please contact me and let me know!

1 Carat Diamond Rings – What to Pay Attention To?
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Sebastian Naturski loves to write about diamonds and share his knowledge with his readers.
When he is not working on his website he is studying law at Humboldt University of Berlin.
He has taken part in several international law competitions and likes to broaden his horizons.
His other big passion are languages. He is fluent in German, English, Polish and Japanese and got basic skills in French and Spanish as well.