How much does a 7.9 carat diamond cost?
Key Takeaways
- A 7.9mm diamond (7.9mm diamond) currently has a reference price ranging from approximately 665,000,000 VND to over 1,680,000,000 VND, depending on the 4Cs standards (Carat, Color, Clarity, Cut) and the accompanying GIA...
A 7.9mm diamond (7.9mm diamond) currently has a reference price ranging from approximately 665,000,000 VND to over 1,680,000,000 VND, depending on the 4Cs standards (Carat, Color, Clarity, Cut) and the accompanying GIA certification.
With a diameter of approximately 7.9 mm (equivalent to a weight of about 1.8-2.0 carats for a round cut stone), this is a segment of large-sized, high-value diamonds, often chosen as the centerpiece for high-end jewelry. Let's explore the detailed price of a 7.9mm diamond with Jemmia Diamond through the article below.
How much does a 7.9mm diamond cost?
The price of a 7.9mm diamond commonly ranges from 665 million to 1,680,000,000 VND depending on the 4Cs standards (Cut, Color, Clarity, Carat).
Below is the latest reference price for a 7.9mm diamond:
7.9mm diamond, Color F, Clarity VS2, weight ~1.85 ct, reference price ~665,000,000 VND.
7.9mm diamond, Color E, Clarity VVS2, weight ~1.90 ct, reference price ~1,026,000,000 VND.
7.9mm diamond, Color D, Clarity IF, weight ~2.00 ct, reference price ~1,680,000,000 VND.
Note: The prices of 7.9mm diamonds above are updated on June 30, 2026. In cases of scarce supply, the value may increase significantly in the future.
Reference: Natural diamonds at preferential prices, officially imported through customs at Jemmia Diamond

The price of a 7.9mm diamond commonly ranges from 665 million to over 1.6 billion VND
Factors determining the value of a 7.9mm diamond
The commercial value of a 7.9mm diamond is precisely determined by the 4C standards from the Gemological Institute of America (GIA):
- Diamond Cut (Cut): For a 7.9mm size, an Excellent cut is the top priority to ensure optimal light reflection. A Round Brilliant cut with 57 precisely cut facets will help the stone achieve the most brilliant fire.
- Diamond Clarity (Clarity): Because the stone has a large surface area, imperfections are easily visible under a 10x magnifying glass. You should consider grades from VS1 to IF to ensure the diamond is clean and has high liquidity value.
- Diamond Color (Color): White diamonds in grades D, E, F are the most popular choice. Among these, D is the highest colorless grade, offering superior transparency.
- Diamond Weight (Carat): A 7.9mm diamond typically reaches a weight of approximately 2.0 carats. This is an important weight benchmark for natural diamond investment.

Diamond prices are determined by the 4Cs standards
Tips for buying a 7.9mm diamond
To own a 7.9mm diamond with lasting value, buyers should note the following:
- Check the GIA certificate: This is the most reputable certificate in the world, ensuring the 4C parameters are accurate. Avoid buying stones of unknown origin or lacking an international appraisal document.
- Use authentication technology: Prioritize vendors using GIA iD100 machines to eliminate the risk of synthetic diamonds (CVD/HPHT) being mixed in.
- Choose an officially distributed vendor: Ensure the product has complete customs invoices to protect ownership rights and the legal status of the asset.

Tips for buying a 7.9mm diamond
Understanding the price of a 7.9mm diamond and the GIA appraisal standards will help you make a safe and effective investment decision. With a size of 7.9mm, it is the perfect choice for crafting valuable diamond rings, diamond necklaces, and diamond earrings. It is not only a luxurious piece of jewelry but also a liquid asset that holds its value over time.

JEMMIA DIAMOND is a diamond expert, a company authorized by the Gemological Institute of America GIA to import and distribute genuine GIA-certified diamonds.
We hope the information shared by Jemmia Diamond has provided you with a comprehensive overview. To own an internationally standard 7.9mm diamond, please contact our Hotline 0838 353 333 or visit Jemmia.vn to receive expert assistance today!