For instance, a 1.00ct round ideal cut hearts and arrows diamond value might be $7,900 per carat, making the total price $7,900.  But a 2.00 carat of the same quality might instead be $13,000 per carat  BUY GOLD  or $27,000 total. Instead of being double in total cost, the 2.00ct diamond is more than three times the price!

Do you know about key weights?
To complicate matters a bit more, price per carat tends to jump at certain ‘key weights’ along the size continuum. For example, 1.00 carat diamonds are not priced 1% more than identical 0.99 carat diamonds. Why? Because there’s a perceived “prestige premium” for going over 1.00 carat.

What are the diamond sizes?
Most diamond sellers charge a premium (relative to 0.01 carat below) upon reaching these ‘key weights.’

0.30 carats
0.40 carats
0.50 carats
0.70 carats
0.90 carats
1.00 carats
1.19 carats
1.50 carats
1.80 carats
2.00 carats
Every 0.50 carats above 2.00 carats.

How diamond prices are determined?
Knowing current market prices is important, whether you’re looking to buy or sell.  So, with that in mind, let’s look at one of the most asked questions by diamond buyers the world over; how much is a 1 ct diamond?

1 Carat Diamond Price
The price of a 1-carat diamond is, of course, completely dependant upon multiple influencing factors (quality, certification etc). Fortunately, PriceScope hosts a select group of vetted diamond vendors who list their diamonds for sale on the system. It also provides data on diamond pricing!  PriceScope has been tracking pricing on thousands of diamonds listed on the system since 2007, so while we cannot give a definitive answer to ‘how much is a 1-carat diamond’ we can give you tangible data and average prices for 1-carat diamonds and all other carat weights!  (All averages given are based on: GIA certified diamonds from D-K, SI2-FL, Good-Ideal).

A 1-carat diamond is a beautiful (and very popular) weight for an engagement ring – the price range for a 1 carat round brilliant diamond is anywhere from $2,000 – $20,000. Take it slap bang in the middle for an H-VS1 1 carat diamond and the average price is $6,597.

2 Carat Diamond Price
The average price range for a 2 carat round brilliant diamond is between $9,800 – $64,500. Notice the jump between 1 and 2-carat diamond prices? That’s because the price per carat has increased.  A gorgeous G-VS2 2 carat princess cut diamond is sure to strike a stunning balance between beauty and budget.