4.2ct Diamond Price Latest Update 2026

The price of a 4ly2 diamond ranges from 12,900,000 VND to 14,200,000 VND, even with the same size, because it depends on the 4Cs standard. Even a small difference in one factor can significantly change the diamond's value.

So, why do 4ly2 diamonds of the same clarity have different prices, and how can you choose a beautiful diamond that fits your budget? Jemmia Diamond will provide the latest 4ly2 price list along with analyses to help you select a quality 4ly2 diamond that holds its value long-term.

How much does a 4ly2 diamond cost?

A 4ly2 diamond, also known as a 4ly2 gemstone, has a price ranging from 12,900,000 VND – 14,200,000 VND depending on the 4Cs standard.

Note: Diamond prices in this article are updated as of January 2026. In case of scarce supply, diamond prices may increase sharply in the future.

See now: Diamond Price List updated latest or Contact Jemmia now: 0838 353 333 for expert diamond consultation. 

A 4ly2 diamond ranges in price from 12,900,000 VND - 14,200,000 VND depending on the 4Cs standard.

How many carats is a 4ly2 diamond?

For a standard Round Brilliant cut diamond, a diameter of 4.2 mm usually corresponds to approximately 0.25 - 0.27 carats. In the market, the commonly used figure is 0.26 carats. This conversion is based on ideal cut proportions, often found in diamonds with a depth of about 59-62%.

How to care for 4ly2 diamond jewelry

Although 4ly2 gemstones are small, they are still valuable diamonds. Due to their small size and delicate prongs, proper care will keep your jewelry sparkling, secure, and maintain its value long-term.

• Remove 4ly2 diamond jewelry before washing dishes, doing laundry, cleaning the house, or swimming to avoid chemicals that can dull the diamond and corrode the metal.
• Wear jewelry after finishing makeup, applying perfume, or using cosmetics to prevent residue buildup on the gemstone's surface.
• Clean periodically with warm water mixed with mild soap, use a soft-bristled brush to gently clean the gemstone and prongs, then dry with a soft cloth.
• Store 4ly2 diamond jewelry separately in a velvet-lined box or a soft pouch to prevent scratching and damage from other jewelry.
• Periodically check the prongs at a jeweler, especially for frequently worn rings, to ensure the gemstone is not loose or at risk of falling out.
• Avoid wearing when doing heavy work, playing sports, or handling hard objects, as impact can bend the prongs or scratch the metal.

Is there a loss when reselling a 4ly2 diamond?

4ly2 diamonds that are durable, clear, free of scratches over time, and come with a diamond certificate will not lose their value over time.

When you no longer need them, you can resell them at the store where you purchased them. Large gemstone trading facilities often have buy-back and exchange policies with good prices. Loose diamonds without accompanying certificates will be harder to buy and sell.

Jemmia currently has a buy-back/exchange policy for 4ly2 diamonds of up to 100%. Contact us immediately at 0838 353 333 to have our diamond experts advise you on a 4ly2 diamond that suits your needs and budget. 

4ly2 diamonds are an ideal choice for those who appreciate delicate, elegant beauty while ensuring timeless value and durability. With their moderate size, these diamonds are suitable for various jewelry styles such as engagement rings, wedding bands, or pendants, and are particularly easy to pair with everyday wear.

When choosing a 4ly2 diamond, buyers should prioritize the 4Cs criteria (Carat, Cut, Color, Clarity) and clear certification to ensure the quality, sparkle, and long-term value of the diamond. Follow Jemmia for more in-depth knowledge about diamonds!