10 Carat Natural Diamond Price 2026. Where to Buy Reputably?
Key Takeaways
- A 10-carat diamond costs between USD 65,000 and over USD 1.3 million (VND 1.6 billion to over VND 30 billion). In this article, Jemmia will help you explore in detail from actual...
A 10-carat diamond costs between USD 65,000 and over USD 1.3 million (VND 1.6 billion to over VND 30 billion). In this article, Jemmia will help you explore in detail from actual value, weight conversion to grams, corresponding millimeter sizes, to the price of 10-carat diamond rings and the most reputable purchase addresses.
How Much is a 10 Carat Diamond?
A 10-carat natural diamond costs between VND 1.6 billion and over VND 30 billion (approximately USD 65,000 – 1.3 million USD). For natural colored diamonds (pink, blue, red), the value can reach tens of millions of US dollars at auctions due to their extreme rarity.
The reason for this huge difference is the progressive pricing rule: the larger the weight, the higher the price per carat. With the wide surface area of a 10-carat stone, any small deviation in color (Color) or clarity (Clarity) can change the value by billions of Vietnamese dong.
Meanwhile, 10-carat lab-grown diamonds have a significantly "softer" price, ranging from VND 100 - 500 million (4,000 - 20,000 USD). This segment suits fashion jewelry needs but does not have accumulation value or high liquidity like natural diamonds.
A 10-carat natural diamond costs between VND 1.6 billion and over VND 30 billion
See more: How Much is a 7 Carat Natural Diamond? Where to Buy Reputably?
How Many Grams is a 10 Carat Diamond?
On the international gemstone scale, a 10-carat diamond is equivalent to 2 grams and has a diameter of about 14 mm (14 ly) for a standard round brilliant cut. This is a "giant" size, with a diameter almost twice that of a typical 1-carat stone (only about 6.5 mm).
Below is a detailed conversion table to help you visualize the size of a 10-carat diamond by cut:
| Cut | Weight (Grams) | Estimated Size (Ly/mm) |
| Round | 2g | ~14.0 mm |
| Marquise | 2g | ~21.0 x 10.5 mm |
| Pear | 2g | ~18.0 x 12.0 mm |
| Heart | 2g | ~14.5 x 14.5 mm |
| Princess | 2g | ~11.0 x 11.0 mm |
See more: How Much is a 5.4mm Diamond Today?
10 carat natural diamond equals 2 grams
What Size is a 10 Carat Diamond in Ly (mm)?
A 10-carat diamond has a standard diameter of about 14 mm (equivalent to 14 ly) for a round brilliant cut. However, this measurement is not fixed and can vary significantly based on the shape and the depth of the cut (Cut Profile).
Example:
- Emerald Cut: approximately 13×11 – 14×12 ly
- Asscher Cut: approximately 12 – 13 ly
- Oval Cut: approximately 16×12 – 16×14 ly
- Radiant Cut: approximately 13×11 – 13.5×11.5 ly
- Pear Cut: approximately 18×12 – 18×13 ly
- Heart Cut: approximately 14 – 15 ly
- Cushion Cut: approximately 12 – 13 ly
Thus, while the diamond weighs 10 carats, the diameter (in ly) can differ significantly. Therefore, when buying a diamond, it is important to distinguish clearly between carat (weight) and ly (size), and also consider the cut to make an accurate assessment.
A 10-carat Round Cut diamond has a diameter of approximately 14mm (14 ly)
How Much Does a 10 Carat Diamond Ring Cost?
A 10-carat diamond ring costs between VND 40 billion and over VND 80 billion for stones meeting high-quality standards (D color, IF-VVS1 clarity). In a more common segment (lower color grade or with inclusions), the minimum price is still around VND 20 - 30 billion.
This is a super-luxury jewelry line, where value not only lies in the weight but also depends on the combination of the center stone's 4Cs and the unique setting design.
10 Carat Diamond Prices on the International Market
- For a D color, I clarity, Excellent Cut (Triple X, no Fluorescence) stone: the price can range from 2-3 million USD (equivalent to ~50-70 billion VND).
- For rare colored stones like Fancy Vivid Yellow, Fancy Pink, Fancy Blue, the price can increase many times over, even reaching hundreds of billions of Vietnamese dong.
- Stones of average quality (low color, visible inclusions, poor cut) can have a "softer" price, but still remain above 20-30 billion VND.
10 Carat Diamond Ring Prices in Vietnam
In the Vietnamese market, a ring with a 10-carat natural diamond:
- High quality, with international GIA certification, prices range from 40-80 billion VND.
- If the design includes smaller diamonds or 18K gold, the value can increase by 5-10%.
- Therefore, to own a 10-carat diamond ring, customers need to prepare a minimum budget of 20 billion VND for the common range, and from 50-100 billion VND for the high-end range.
A 10-carat natural diamond ring costs at least 20 billion VND
See more: What is Officially Imported Diamond? Why Should You Buy It?
Where to Buy a 10 Carat Diamond?
With a value of tens of billions of Vietnamese dong, choosing a supplier for 10-carat diamonds requires absolute legal scrutiny. Jemmia Diamond is a leading trusted destination, meeting all the strictest international standards.
- 100% Officially Imported: Full invoices and GIA certificates, guaranteeing legal assets and sustainable investment value.
- Selected Top 2% Worldwide: Only provides diamonds of the most perfect quality, without structural flaws.
- US GIA Technology: Pioneer in using GIA iD100 machines to verify origin, eliminating 100% risk of synthetic diamonds being mixed in.
- Ethical Sourcing: Adheres to the "Kimberley Process", committed to not using conflict diamonds.
- Luxury Service: Private, luxurious transaction space with the best buy-back and exchange policies on the market.
Refer to: Natural Diamond Prices with attractive offers at Jemmia Diamond
Jemmia Diamond is a reputable and quality diamond purchase address
FAQ - Frequently Asked Questions about 10 Carat Diamonds
Does a 10 Carat Diamond Lose Value When Resold?
A 10-carat diamond does not lose value when resold; on the contrary, it tends to increase significantly in price over time. Due to its extreme rarity, a 10-carat diamond is classified as a safe-haven asset. Stones with GIA certification and perfect specifications always have international liquidity and better value retention than smaller sizes.
Why is the Price Difference So Large Between Color Grades in the 10 Carat Size?
The price difference between color grades in 10-carat diamonds arises from the large surface area of the 10-carat stone; even the slightest yellowish tint is more visible compared to a 1-2 carat diamond. A D color (colorless) 10-carat diamond is extremely rare, so its value can be double or triple that of a J-K color stone of the same weight.
Do I Need a GIA Certificate When Buying a 10 Carat Diamond?
Any diamond needs a GIA certificate. For an asset worth tens of billions of Vietnamese dong, the GIA certificate is the sole "birth certificate" verifying its naturalness, quality, and ethical origin. Absolutely do not trade large-sized diamonds without international documentation to avoid the risk of fakes or treated stones.
In summary, the answer to how much a 10-carat diamond costs depends on its quality and origin, ranging from a few billion to tens, or even hundreds of billions of Vietnamese dong. If you are looking for a reputable place to buy, Jemmia Diamond is a trustworthy choice, offering internationally certified products along with premium consulting and jewelry-making services.
