6.3mm Diamond Price by the Latest 2026 4Cs Standard
Key Takeaways
- 6.3mm diamonds on the market have prices ranging from 200,000,000 VND to over 400,000,000 VND. The price of a 6.3mm diamond depends on the 4Cs standards of the Gemological Institute of America....
6.3mm diamonds on the market have prices ranging from 200,000,000 VND to over 400,000,000 VND. The price of a 6.3mm diamond depends on the 4Cs standards of the Gemological Institute of America. This article from Jemmia Diamond will provide a deeper understanding of the price of 6.3mm diamonds, and analyze the key factors according to the GIA 4Cs standards (Color, Clarity, Cut, and Carat Weight) to help you make a smart purchasing decision and own the most perfect diamond!
How Much Does a 6.3mm Diamond Cost?
The price of a 6.3mm diamond on the market has a considerable difference, ranging from 200,000,000 VND to over 400,000,000 VND, depending entirely on the GIA 4Cs (Gemological Institute of America) standards.
Specifically, the 4Cs standard includes shape, size, color, and clarity factors, as well as GIA certification and the place of purchase.
Below is a specific price list for 6.3mm GIA diamonds, officially imported and customs cleared, updated on 04/14/2026 from Jemmia Diamond:
Color Grade | Clarity Grade | Selling Price |
6.3mm diamond, D color | IF | 366,620,000 VND |
6.3mm diamond, D color | VVS1 | 339,450,560 VND |
6.3mm diamond, D color | VS1 | 301,750,800 VND |
6.3mm diamond, F color | VVS1 | 268,750,400 VND |
6.3mm diamond, D color | VVS2 | 268,750,400 VND |
6.3mm diamond, F color | VS2 | 229,990,800 VND |
6.3mm diamond, G color | VS2 | 168,990,200 VND |
Note: The prices of 6.3mm diamonds in this article are updated on 04/14/2026. In case of scarce supply, the price of diamonds may increase significantly in the future.
See now: Updated diamond prices or Contact Jemmia immediately for detailed consultation: 0838 353 333
Officially imported and customs cleared diamonds at Jemmia
How do the 4Cs factors affect the price of a 6.3mm diamond?
Carat (Weight)
Cut
- The cut is the soul of the diamond, determining its light reflection ability (sparkle or "fire"). GIA's rating is from Excellent → Good → Fair → Poor.
- A 6.3mm stone with an Excellent cut can optimize light, creating the most brilliant sparkle and sharp rainbow flashes. An Excellent cut can increase the diamond's price by 10-20% compared to stones with lower cut grades (e.g., Good or Fair).
Color
Diamond color is graded on a scale from D (Absolutely Colorless) to Z (Light Yellow).
- D–F Group (Colorless): This is the highest value segment because the stone is almost perfectly transparent, with no discernible color tones to the naked eye.
- G–J Group (Near Colorless): Retains purity but is more affordable. The price difference between the D–F and G–J groups for a 6.3mm stone can be tens of millions of VND.
Clarity
Clarity assesses the degree of inclusions (internal impurities) and blemishes (surface flaws) of the diamond. A 6.3mm stone with high clarity such as IF, VVS1, or VVS2 will be significantly more expensive (potentially double) than a stone in the SI1 or SI2 grade. The reason is that fewer inclusions allow light to pass through the stone perfectly, optimizing brilliance and transparency.
4Cs standards certified by GIA (Gemological Institute of America)
How many Carats is a 6.3mm diamond?
- This is an estimated weight, depending on the cut proportions and depth of the diamond.
- A 6.3mm diamond is just under the psychological mark of 1.00 Carat, allowing buyers to own a diamond that looks visually almost 1 Carat but has an actual weight under 1.00 Carat (e.g., 0.95 ct), saving significant cost compared to an exact 1.00 ct stone.
A 6.3mm diamond is almost equivalent to 1 carat
What kind of jewelry is a 6.3mm diamond suitable for?
- Engagement rings and wedding bands: A 6.3mm diamond is the best choice if you are looking for a diamond wedding ring, creating a strong, luxurious, yet balanced impression.
- Pendants: Creates a sparkling and eye-catching accent around the neck.
- Earrings: Using two 6.3mm stones for each ear will further highlight your face, creating a statement at important events.
A 6.3mm diamond is a standard size for all types of jewelry
Where to buy a reputable 6.3mm diamond?
The decision of how much a 6.3mm diamond costs does not stop at the price list, but also depends heavily on the place of purchase. A reputable store will ensure quality, value, and provide a secure shopping experience. Jemmia Diamond is proud to be a diamond brand trusted by customers to own high-standard 6.3mm diamonds, ensuring value and assets for customers.
Each 6.3mm diamond at Jemmia Diamond is officially imported and customs cleared, with clear GIA inspection certificates, guaranteed by sales contracts with transparent buy-back and exchange policies, ensuring long-term benefits for customers.
To ensure absolute quality and origin, Jemmia Diamond has invested in modern inspection machinery. Watch the video below to discover the GIA iD100 and GIA Diamond Dock technology that verifies genuine diamonds at Jemmia!
Refer to: Stores offering a diverse collection of high-class and quality 6.3mm diamond jewelry, including women's diamond rings, men's diamond rings, diamond earrings, diamond necklaces, diamond bracelets.
