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06:33 CH - Thứ Sáu | 25/03/2026

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

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.

Factors determining the value of a 7.9mm diamond

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:

  1. 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.
  2. Use authentication technology: Prioritize vendors using GIA iD100 machines to eliminate the risk of synthetic diamonds (CVD/HPHT) being mixed in.
  3. 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 diamonds

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 - Reputable diamond purchasing address

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!

Nhung Hoang

Author: Nhung Hoang

Content Writer Specialist

Nhung Hoang là Content Writer Specialist với hơn 3 năm kinh nghiệm nghiên cứu và phát triển nội dung về kim cương tự nhiên và ngành trang sức. Với nền tảng kiến thức được đào tạo trực tiếp bởi Giám đốc hoạch định GIA của Jemmia Diamond, Nhung Hoang tập trung xây dựng các bài viết chuyên sâu về kim cương GIA, trang sức kim cương và xu hướng trang sức, nhằm mang đến những thông tin chính xác và đáng tin cậy cho người đọc.

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