How Much Is a 4-Carat Natural Diamond? Where to Buy from a Reputable Source?

A standard round-cut 4 carat diamond (Round Brilliant Cut) usually has a size ranging from 10.1 mm to 10.3 mm (a little over 10 ly).

To make it easier to visualize, "ly" is the common term in Vietnam for the millimeter (mm) unit. The figure 10.2mm is the ideal specification calculated based on the physical structure of pure diamond to ensure optimal light reflection. However, the carat unit measures weight (1 carat = 200mg), so 4 carats correspond to 800mg of diamond weight. Depending on how this weight is distributed in depth or width, the actual ly measurement may vary slightly.

Standard 4 carat diamond 10.1 - 10.3 mm

Fancy Shape cuts (Special shapes):

• Oval cut (Oval): About 13.0 x 8.5 mm.
• Pear cut (Teardrop): About 13.5 x 9.0 mm.
• Princess cut (Square): About 9.0 mm.
• Emerald cut (Rectangular cut): About 10.5 x 7.5 mm.

Luxurious and elegant 4 carat diamond ring designs

Classic Solitaire ring design

This is a minimalist design with 4 or 6 slender prongs, focusing all attention on the 4 carat center diamond. Simplicity is the pinnacle of luxury, allowing the stone to fully display its brilliance and enormous face-up size.

Classic Solitaire ring

Halo ring design 

The center diamond is surrounded by one or two halos of small melee diamonds. This design not only creates a sparkling light effect but also makes the 4 carat stone look like 5-6 carats, bringing a splendid and regal appearance to ladies at evening parties.

Diamond ring Halo

Three-Stone ring design 

The 4 carat center stone is set in the middle, flanked by two smaller diamonds (usually Pear or Cadillac shapes). This ring design symbolizes the past - present - future, making it the perfect choice for important anniversaries among the upper class.

Three-Stone ring design - Strong lasting connection

Where to buy a reputable 4 carat diamond?

• 100% officially imported through customs: Ensuring full sales invoices and legal GIA documentation. Your diamond is a legal asset with protected investment value.
• Only selecting the top 2% most beautiful diamonds in the world: At Jemmia, we are even stricter than the usual 4C standard. Each 4 carat diamond is carefully selected, with a commitment to no structural flaws or inclusions affecting long-term durability.
• Advanced inspection technology from the United States: Jemmia is a pioneer in using GIA iD100, GIA Diamond Dock systems... to help verify origin and ensure the stone you own is a pure natural diamond.
• Ethical values and responsibility: 100% of diamonds at Jemmia comply with the "Kimberley Process", saying no to blood diamonds and ensuring humanity in every product.
• Best trade-in policy on the market: We understand customers' upgrade needs. With transparent pricing and a flexible buyback policy, Jemmia accompanies you through every stage of your investment.