How much does a 4.8 carat diamond cost?

A 4.8 mm diamond (0.4 ct) is the "golden point" favored by jewelry enthusiasts. This size is just prominent enough on the finger, yet much more accessible in price compared to half-carat or 1-carat diamonds. However, for the same 4.8 mm size, the value can differ by more than double, from 20,600,000 VNĐ to over 45,000,000 VNĐ.

This article will analyze in detail the pricing factors, feng shui meanings, and the best way to choose a 4.8 mm diamond.

How Much Does a 4.8 mm Diamond Cost?

Diamond price fluctuations in the market are significant; even within the same size (mm), there can be considerable differences. A 4.8 mm diamond ranges in price from 20,600,000 VNĐ to 45,000,000 VNĐ, depending on the quality of each stone.

The difference in the 4Cs standards causes a significant change in the diamond's value:

• Differences in clarity and color: A D color, VVS1 clarity diamond will be about 25% more expensive than a VVS2. A D color diamond is 15% more expensive than an E color diamond. These price differences are not uniform and vary for each diamond.
• Overall range: A D color, IF clarity (most perfect) diamond can be more than 3 times the price of an F color, VVS2 clarity (the cheapest in the 4.8 mm range).
• Cut: An excellent cut not only gives each gemstone a unique personality but also creates a significant price difference, as it maximizes brilliance and requires high precision in craftsmanship.

Note: Diamond prices in this article are updated as of December 2025. In case of supply shortages, diamond prices may increase significantly in the future.

See now: Updated Diamond Price List or Contact Jemmia immediately: 0838 353 333

Latest 4.8 mm Diamond Price Update

How Many Carats is a 4.8 mm Diamond?

A 4.8 mm diamond is approximately 0.4 carat (Ct). Carat is the unit of weight for diamonds (1 carat = 200 mg), while 'ly' is a unit of size, equivalent to millimeters (1 ly = 1 mm).

For a standard Round Brilliant Cut diamond, a 4.8 mm stone has a diameter of approximately 4.8 mm, which is considered a moderate size and very suitable for everyday jewelry.

The 4.8 mm diamond can be said to be a perfect balance: it is noticeably larger than a 4.5 mm (~0.32 ct) but significantly more cost-effective than a 5 mm (~0.5 ct), which has already reached the half-carat threshold and sees a sharp price increase.

A 4.8 mm diamond is about 0.4 ct

The Meaning of a 4.8 mm Diamond

A 4.8 mm diamond carries deep meanings of feng shui, love, and aesthetic value:

• Prosperity and Stability: The number "4.8" is understood as "Tứ Phát" (Stable Prosperity) in Eastern philosophy, symbolizing durability, luck, and long-term prosperity.
• Eternal Love: It is a symbol of unwavering commitment, representing lifelong promises and steadfastness in love and marriage.
• Aesthetic Value: Its delicate, moderate size signifies sophistication and refinement of the giver, while creating optimal brilliance when cut to Excellent grade.

What Type of Jewelry is a 4.8 mm Diamond Suitable For?

With a size of approximately 4.8 mm (equivalent to ~0.38–0.40 carat), a 4.8 mm diamond is considered a "versatile" size, suitable for many types of jewelry. Here are the most popular choices:

Rings: The 4.8 mm size is ideal for engagement rings/wedding bands due to its refined beauty and optimal cost. When used for fashion rings or solitaire rings, the stone fits perfectly and is not cumbersome; with a halo design, a 4.8 mm diamond can create a visual effect as large as approximately 6 mm.

Small and elegant 4.8 mm diamond ring

Earrings: 4.8 mm stud earrings are the most popular choice. A pair of studs with a total weight of about 0.8 ct offers elegance, sparkle, and is easy to match with any style.

Jemmia 4.8 mm diamond earrings

Necklaces: A 4.8 mm diamond is suitable for solitaire or halo pendant designs, creating a moderate accent that is sparkling enough for everyday wear yet stands out at parties.

Jemmia Diamond Jewelry

The flexibility in design is also a strong point of the small 4.8 mm diamond. It can be easily combined with various metals and styles, from white gold to platinum, from traditional to modern. This makes the 4.8 mm diamond suitable for many occasions, including formal events or pairing with everyday work attire, providing just enough beauty to attract attention without losing its sophistication.

>> Beautiful diamond earring models currently available at Jemmia Diamond

Where to Buy a Reputable and High-Quality 4.8 mm Diamond?

Owning a GIA 4.8 mm diamond requires choosing a highly reliable retailer that ensures both quality and legal legitimacy. Jemmia Diamond, an authorized partner of the Gemological Institute of America (GIA) for distributing genuine GIA-certified diamonds, is a leading destination for secure investment.

At Jemmia, customer peace of mind is paramount through distinct commitments:

• Absolute Legal Transparency: All diamonds are imported through official customs procedures, accompanied by full GIA certificates and sales invoices. This confirms your asset is legal and has lasting value.
• Commitment to Superior Quality: Jemmia applies strict selection standards, choosing only the top 2% of the world's highest quality diamonds, based on GIA's 4Cs grading standards.
• Verification with Advanced GIA Technology: To verify origin and quality, Jemmia is equipped with the most advanced GIA (USA) inspection equipment (such as GIA iD100, GIA Diamond Dock). This eliminates any doubt about the diamond's authenticity.
• Ethical Trading: Diamonds at Jemmia are imported according to the Kimberley Process, ensuring clear origin, free from conflict, upholding business ethics and environmental protection.
• Superior After-Sales Policy: With a buy-back and trade-in policy considered the best in the market, customers are assured of their investment value, with the ease of upgrading or exchanging products in the future.