Diamond

4Ct Diamond Ring

A 4 carat diamond ring is a significant luxury purchase, with prices varying dramatically based on factors such as cut quality, clarity, color, diamond shape, and whether the stone is natural or lab-grown[1]. For natural diamonds, prices in 2025 generally range from $20,000 at the low end to over $200,000 for top-tier color and clarity, while medium-quality stones typically fall between $50,000 and $70,000[3][2]. Truly exceptional natural stones may even exceed $275,000[1]. Lab-grown 4 carat diamonds are substantially more affordable, starting around $5,800 and ranging up to $40,000, depending on quality[4][3].

The price of a 4 carat diamond ring is primarily impacted by the Four Cs:

  • Carat (weight)
  • Cut quality
  • Clarity
  • Color

Other significant factors include certification (such as from GIA), the type of setting, and the diamond’s shape—round and other popular shapes often command a premium[2][1]. For example, a 4.02 carat cushion cut halo set ring with G color and VS2 clarity might sell for around $68,030, while a similar quality oval cut three-stone ring could reach $73,760[1].

Lower-quality natural diamonds (I-J color, SI1-SI2 clarity) may start from $15,000, but will show more visible inclusions and have less brilliance[2]. Conversely, 4 carat round diamonds with rare D color and high clarity can cost as much as $225,000 or more[5][7].

Lab-grown diamonds, such as those offered by VRAI, are considerably less expensive and begin at $5,800 for a 4 carat diamond. The price increases with higher grades or complex settings[4]. These stones are chemically identical to natural diamonds and are often favored for budget and ethical reasons.

Because of their size, 4 carat diamonds are more likely to reveal flaws, so choosing a high-quality stone is especially important. Certification by a reputable lab helps ensure you know exactly what you’re buying[2][1].

References

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