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A 3 carat diamond is an excellent choice for a ring

If you want a diamond ring more special than what most people have, a 3 carat diamond is an excellent choice.

Carat is one of the 4Cs that affects the price of a diamond. Many people think carat is a unit of size, but it is in fact a unit of weight. The word carat comes from the Carob seed, which was used centuries ago to determine the weight of precious stones as the seeds have a uniform weight. When diamonds are weighed, they are given a carat weight commonly rounded off to the second decimal place. One full carat weighs 200 milligrams, or 0.007 ounces.

Another diamond size? 1 carat diamond, 2 carat diamond, 4 carat diamond, 5 carat diamond, 6 carat diamond, 7 carat diamond, 8 carat diamond, 9 carat diamond, 10 carat diamond or go to the Diamond Wholesale Prices

3 carat diamond size comparison for rings

How much does it cost?

Diamond Pricing: Starting at 3 carats, diamonds become increasingly rare to find.

That is why just one 3 carat diamond will be worth much more than three 1 carat diamonds. In fact, carat weight does not affect value or size proportionately. A 1 carat Round Brilliant Cut has a diameter of 6.5 mm, whereas a 3 carat Round Brilliant Cut is 9.3 mm. As for the price per carat, a 3 carat diamond weighing 600 milligrams ranges between $6,050 and $ 84,810 per carat.

What are the wholesale prices of a 3 carat?

If you are interested in buying a diamond that is more special than the diamonds most other people buy, then you’re in the right place.

To calculate the average final wholesale price of a 3 carat diamond, multiply the price per carat of the diamond you want by 3.

  The average wholesale price of a 3 carat Certified GIA Diamond would range between $ 18,150 and $ 254,430.


3 Carat
D 84,810 61,270 54,780 42,460 32,890 20,790 14,740
E 60,060 54,780 45,870 36,520 29,480 19,580 13,970
F 51,810 47,740 40,040 33,000 26,620 17,930 13,310
G 39,270 35,200 32,340 28,270 23,100 16,170 12,650
H 29,480 28,270 25,410 22,440 19,030 13,860 12,100
I 21,340 20,130 19,030 17,270 14,960 12,100 10,450
J 16,940 16,610 15,730 14,190 12,760 10,340 9,240
K 15,180 14,520 13,970 12,650 11,440 8,910 7,700
3 Carat
D 49,500 40,040 35,200 28,930 24,750 17,710 11,770
E 38,720 35,530 32,670 27,170 23,100 17,050 11,220
F 33,660 31,680 28,930 24,860 21,010 15,730 10,780
G 29,810 27,720 25,960 21,230 18,590 13,750 10,560
H 24,640 23,210 20,680 17,820 15,290 11,550 9,680
I 18,700 17,490 16,280 14,850 12,210 10,120 8,360
J 13,420 12,650 11,880 11,110 10,010 8,140 7,040
K 10,560 10,120 9,680 9,350 8,360 6,930 6,050

All prices are in US$ per Carat.

What to do next


To get today’s wholesale price for the 3 carat diamond you want, fill out the form to let us know what you are looking for and to receive a free quote.

Our team will then search the world’s largest inventory of wholesale diamonds to find the best deal for the stone you want. Your diamond expert will contact you to discuss further details about the process and give you advice.

3 carat diamond ring real size

Design bespoke jewelry: 3 carat diamond ring, engagement rings, wedding rings,

Pick your perfect loose diamond and create unique jewelry from diamond rings to diamond earrings

Create your own unique 3 carat diamond ring with Diamond Registry’s all-round jewelry services. Picking the perfect loose 3 carat diamond is the first step to creating a unique 3ct diamond ring. You will be able to pick the type of jewelry once you have an idea of which type of loose diamonds would be perfect for you. Depending on the diamond itself, our jewelers can craft unique cushion cut engagement rings, a princess cut engagement ring, eternity band wedding rings or pear shaped diamond earrings – it all depends on what you want to create.

Through a longstanding tradition of jewelry craftsmanship, our in-house jewelers create the finest diamond rings and jewelry using the latest cutting edge technology and techniques for crafting sophisticated engagement rings, wedding rings, diamond pendants and any other type of jewelry imaginable. Combining loose diamonds that you pick personally, and setting them in jewelry you design, is truly the height of bespoke diamond jewelry. And with a vast choice in loose diamonds, ring designs, ring settings, precious metals, diamond shapes and diamond color, the choice of jewelry with The Diamond Registry is infinite.

Look also for a 2 carat diamond ring or a 4 carat diamond ring in your budget and choose what fits best to you needs.


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