How much does a 20 Carat Diamond cost?
Key Takeaways
- 20 Carat Diamonds are a category of extremely rare "Special Stones" with prices ranging from 30 billion VND to over 200 billion VND per stone, depending on the 4C certification. With their...
20 Carat Diamonds are a category of extremely rare "Special Stones" with prices ranging from 30 billion VND to over 200 billion VND per stone, depending on the 4C certification. With their enormous size (approximately 18mm in diameter), these diamonds are not only regal jewelry but also strategic accumulation assets for the ultra-rich and global collectors. Let Jemmia Diamond explore the đẳng cấp value of this treasure below.
How much does a 20-carat diamond cost?
The price of a 20 Carat diamond currently has no fixed rate, ranging from tens of billions to hundreds of billions VND, strictly dependent on Color, Clarity, and the liquidity of the GIA certificate.
According to reports from major diamond exchanges in Antwerp (Belgium), diamonds over 10 Carats increase in value geometrically. A 20 Carat diamond with D color, IF clarity (flawless) can be 400-500 times more expensive than a 1 Carat diamond of the same quality. Below is the reference price list for 2026:
| Color | Clarity | Cut | Reference Price (VND) |
| D | IF | Excellent | > 180,000,000,000 |
| E | VVS1 | Excellent | ~ 120,000,000,000 |
| F | VS1 | Excellent | ~ 75,000,000,000 |
| H | VS2 | Excellent | ~ 35,000,000,000 |
Note: Diamond prices in this article are updated on March 30, 2026. In case of scarce supply, diamond prices may increase sharply in the future.
See now: Latest diamond price list or Contact Jemmia now: 0838 353 333
The beauty of a 20-carat diamond
The beauty of a 20 Carat diamond lies in its absolute presence and its ability to exhibit the strongest Fire due to its surface area larger than 18mm.
At this size, every intricate line of the cut is magnified, creating a miniature "universe of light." 20 Carat diamonds are often prioritized with cuts like Round Brilliant, Emerald, or Pear to honor their nobility. Owning such a stone is a way to assert unparalleled status, a symbol of complete success that anyone would admire.
20 carat diamonds have the ability to exhibit the strongest Fire due to their surface area larger than 18mm.
Notes when buying a 20-carat diamond
When investing in a 20 Carat diamond, verifying the international GIA certificate and choosing a brand new diamond are crucial factors to preserve asset value.
To own a worthy diamond, you need to note:
- International certification: A GIA (Gemological Institute of America) certificate is mandatory to ensure global liquidity.
- Usage status: Choose 100% new diamonds to retain auspicious feng shui energy, bringing lasting wealth and luck.
- Actual specifications: Carefully compare the girdle inscription and technical specifications (depth, proportions) to ensure the stone exhibits the most brilliant fire.
More importantly, only new diamonds hold the best feng shui energy. They will bring prosperity, luck in work, and happiness in love.
- Diamonds must have complete quality inspection documents from reputable organizations. Each diamond will have quality inspection documents, clearly showing all product specifications. Therefore, pay close attention to this when buying a 20-carat natural diamond.
- Diamonds with high purity, good color, and beautiful cuts are more valuable. If the budget is limited, consider choosing a suitable product.
Notes when buying a 20-carat diamond
Jemmia Diamond – The ideal choice for diamond enthusiasts
JEMMIA DIAMOND is a reputable diamond expert, authorized by the Gemological Institute of America (GIA) to import and distribute diamonds through official channels in Vietnam.
At Jemmia, customers can rest assured because:
- iD100 Verification: Advanced technology to accurately classify natural diamonds, eliminating risks from synthetic or treated diamonds.
- Transparent Origin: 100% of products have VAT invoices, complete official import documents, and confidentiality for VIP transactions.
- Unique Design: An experienced team of artisans supports the creation of exclusive jewelry settings, worthy of the value of a 20 Carat center stone.
Jemmia - A reputable place to buy diamonds
20 Carat diamonds symbolize luxury and are a lasting heritage asset over time. Although the ownership price can reach hundreds of billions of VND, their symbolic value and growth potential are a testament to glorious success. Contact hotline 0838 353 333 immediately for Jemmia Diamond to assist you in hunting for the rarest "Special Stones" in the world.
