Round loose diamonds. GIA, HRD, IGI certified round loose diamond
Discover the largest selection of round loose diamonds sold at wholesale prices from the largest diamond exchanges in the world. Buying a certified round loose diamond has never been easier.
Find our best offers:
- Round loose diamonds: Best quality
- Round loose diamonds: Excellent quality
- Round loose diamonds: Very good quality
- Round loose diamonds: Good quality
- All our round loose diamonds
Use our filters below to select the loose diamond of your choice.
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We guarantee that the diamonds sold on our website are 100% natural and that they conform to their accompanying Gemological Certificates.
We guarantee that the loose diamonds offered to you are obtained from legitimate sources that are not involved in financing conflicts and are compliant with UN resolutions.
All the diamonds offered are sold with a Gemological Certificate issued by a gemology laboratory with international standing recognized by our profession.
Your invoice will be included in the package. Keep it somewhere safe, as it will constitute your warranty document.
We have been present online since 1999, which is 26 years of web trading!
If you would like personalized advice, call us at 1-800-700-2160 (Toll Free) or 1-302-722-6172.
Our Experts will be delighted to assist you and guide you as objectively as possible in making your choice.
Shipping: for an order placed today, delivery will be no later than Friday, 12 September.
Shipping Method: all orders are shipped using FedEx®.
Insurance: all our products are insured during shipping. They are therefore covered against all risk of loss or theft.
In your package, you will find:
- The diamond's Gemological Certificate.
- Your invoice, which will constitute your warranty document.
Your diamond placed in a box: ready to present as a gift!
Order Status: as soon as your package has shipped, we will notify you of the tracking number. This will allow you to track the delivery process online.
If you are not at home: Fedex will contact you by telephone to agree on a time with you for the delivery of your package.
Payment Facilities (for an US delivery):
- By Credit Card (Secured Payment). Available if total amount of the order is < to $3,500.00
- By Wallets: Apple Pay, Google Pay, Alipay.
- By Bank redirects: Giropay, Sofort, iDeal, EPS, P24, Bancontact, etc... Not available for all countries and currencies.
- By Bank Transfer
Our jewellery workshop is at your disposal to design and produce a setting. Our jewellers work with the most prestigious names in fine jewellery.
We invite you to consult our Catalog of Jewelry, you will find our Rings, Engagement Rings, Solitaires, Wedding Rings, Eternity Rings, Earrings and Pendants models in Yellow Gold, White Gold, Pink Gold or Platinum.
Our catalog contains more than 5000 items and the Rings and the Eternity Rings are in 3D (videos).
Your diamond placed in a box: ready to present as a gift!
We are diamantaire: we buy at the source and resell directly to the consumer. Having fewer middlemen means a lower selling price and therefore real savings for you!
All our loose diamonds and those used in our Diamond Jewelry are purchased from legitimate sources not involved in funding conflict and in compliance with United Nations Resolutions. Info Diamond hereby guarantees that these diamonds are conflict free, based on personal knowledge and/or written guarantees provided by the supplier of these diamonds. We sell only non-conflict diamonds.
Our jewellery workshop is at your disposal to design and produce a setting. Our jewellers work with the most prestigious names in fine jewellery. Our jewellers and designers will be able to help and advise you in the choice of a setting.
Click on this link to update our prices in your local currency or modify Tax (VAT).
Tip: hover your mouse cursor over the various fields in the form above or in the form's dropdown lists and you will see help or information about this field.
Certain filtering options can considerably limit the number of results obtained. These optional fields should therefore be used in moderation.
If you would like to receive personalized advice, call us at 1-800-700-2160 (Toll Free) or 1-302-722-6172.
Our Diamond and Jewelry Experts will be delighted to assist you and guide you as objectively as possible in making your choice.
How to choose a round brilliant cut diamond?
Diamantaires often shorten "round brilliant cut diamond" to "brilliant".
Round brilliant cut diamonds are highly sought-after; it is the most popular diamond shape worldwide.
It is often set on engagement rings, owing to its timeless beauty.
Its history is more than a hundred years old, and is as popular today as it was back then.
Today, round diamonds account for more than 75% of all the diamonds sold worldwide.
Diamantaires have a thorough knowledge of this shape. Its cut is completely standardized, and can be automated for smaller diamonds.
A Round Brilliant Cut Diamond has between 57 and 58 facets (depending on whether the culet was polished into a facet or closed to a point):
- Table: 1 facet.
- For the crown: 8 bezels, 8 stars and 16 upper girdle facets.
- For the pavilion: 8 pavilions and 16 lower girdle facets.
- Culet: 1 or 0 facet (if no culet facet). Also, in higher quality goods the girdle is frequently faceted, but these facets are not counted in the total.
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When brilliant diamonds are cut optimally, they shine with all their fire, brilliance, and sparkle, which are more salient on this shape than on others.
A round brilliant cut diamond is perfectly symmetrical and will reflect light from one facet to another ideally.
A round diamond can be set on all sorts of jewelry: rings, solitaires, wedding rings, pendants, necklaces, and earrings. Many of our customers choose a round diamond for their engagement ring. There is something for every budget.
The dimensions of a brilliant can vary greatly according to its weight.
- 0.20 carat round brilliant will be 3.80 mm in diameter.
- 0.30 carat round brilliant will be 4.20 mm in diameter.
- 0.40 carat round brilliant will be 4.80 mm in diameter.
- 0.50 carat round brilliant will be 5.20 mm in diameter.
- 0.60 carat round brilliant will be 5.40 mm in diameter.
- 0.70 carat round brilliant will be 5.80 mm in diameter.
- 0.80 carat round brilliant will be 6.00 mm in diameter.
- 0.90 carat round brilliant will be 6.30 mm in diameter.
- 1.00 carat round brilliant will be 6.50 mm in diameter.
- 1.25 carat round brilliant will be 7.00 mm in diameter.
- 1.50 carat round brilliant will be 7.40 mm in diameter.
- 2.00 carat round brilliant will be 8.20 mm in diameter.
- 3.00 carat round brilliant will be 9.40 mm in diameter.
- 4.00 carat round brilliant will be 10.40 mm in diameter.
You will find in our diamond bourse a large selection of diamonds available online, from 0.20 to dozens of carats.
We suggest that you pick a round diamond with an excellent (or very good) cut quality, polish, and symmetry.
Prefer brilliants whose color grade is included between D and H, and whose clarity grade is included between FL and SI2.
Avoid diamonds that exhibit a strong or very strong fluorescence.
For those with little time, you can use our "Expert Opinion" option of our filters above by selecting 5 star diamonds only. This will filter
diamonds with a low quality or that are ill-cut.
How much is a round brilliant cut diamond?
The price of a round brilliant cut diamond is always based on the "4Cs:" Cut (shape), Carat weight, Color, and Clarity.
Because the price of diamonds is expressed in USD on the international market, you will need to change your local currency for USD. The exchange of your local currency rate fluctuates daily according to the exchange market. Consequently, the selling price of a diamond featuring in our diamond bourse may be slightly different from one day to the next depending on the exchange rate of your local currency of the moment.
The prices listed below are selling prices, not resale prices. The value of a diamond will differ depending on whether you are buying or selling. If you wish to know the value of a diamond, we recommend that you use our diamond price calculator.
How much is a 1 carat round brilliant diamond? You will find below some examples of prices for round brilliant cut diamonds.
Below are some examples of prices for round brilliant cut diamonds of best quality (D Color and FL-IF Clarity) :
- Round Brilliant from 0.53 carat color D and clarity IF, price: $2,609.00
- Round Brilliant from 0.70 carat color D and clarity IF, price: $5,102.00
- Round Brilliant from 1.01 carat color D and clarity IF, price: $15,180.00
Below are some examples of prices for round brilliant cut diamonds of very good quality (E Color and VVS2 Clarity) :
- Round Brilliant from 0.50 carat color E and clarity VVS2, price: $1,565.00
- Round Brilliant from 0.70 carat color E and clarity VVS2, price: $2,875.00
- Round Brilliant from 1.01 carat color E and clarity VVS2, price: $7,176.00
Below are some examples of prices for round brilliant cut diamonds of good quality (G Color and VS2 Clarity) :
- Round Brilliant from 0.50 carat color G and clarity VS2, price: $1,120.00
- Round Brilliant from 0.73 carat color G and clarity VS2, price: $1,939.00
- Round Brilliant from 1.03 carat color G and clarity VS2, price: $5,345.00
Below are some examples of prices for round brilliant cut diamonds of commercial quality (H Color and SI2 Clarity) :
- Round Brilliant from 0.52 carat color H and clarity SI2, price: $934.00
- Round Brilliant from 0.72 carat color H and clarity SI2, price: $1,043.00
- Round Brilliant from 1.00 carat color H and clarity SI2, price: $2,320.00
How to use the filters of our diamond bourse?
Take your time to discover all the filters that we offer. They will save you some time, and will help you find your dream diamond more easily!
Tips: if you need help, move your cursor on the , which you can find on
the different options of our filters.
You should access the main filters (see picture below) by default, which will allow you to choose your preferred diamond shape. You may select several shapes at the same time, or all of them. You may also use different sliders in order to filter diamonds by weight, color, clarity, and price.
By clicking onto "Secondary Filters", you will have access to more options to narrow down your search results. You only need to select the different options of your choosing to narrow down your research.
Displaying results
You have the possibility to display the results in 2 different formats:
- List display (table): by clicking on this icon 
below the filters you can display the diamonds in a list (table) format.
- Grid view (thumbnail): by clicking on this icon 
below the filters you will be able to display the diamonds in a grid (thumbnail) format.
