As of 2025, the price of a 1-carat diamond can range from $2,400 to $27,000 in the Australian market, but typically costs $4,000 - $9,000 in the US
. The price depends on the diamond's cut, color, and clarity grades, as well as whether it is a natural or lab-grown diamond
. Factors that affect the price of a 1-carat diamond:
- Cut A superior cut grade can significantly increase the price of a diamond
- Color Colorless diamonds (graded D) command the highest prices
- Clarity Diamonds with fewer inclusions or blemishes will be more expensive
- Carat Even slight variations in weight can impact the price
- Natural vs. Lab-grown Lab-grown diamonds are more affordable than natural diamonds
. A 1-carat lab-grown diamond costs $800 - $2,000, while a natural diamond of the same size costs $4,000 – $9,000
Examples of 1-carat diamond prices:
- Premium quality natural diamond (Excellent cut, D-F color, VVS clarity): $12,000-$27,000
- High quality natural diamond (Excellent-Very Good cut, G-H color, VS clarity): $8,000-$15,000
- Good value natural diamond (Very Good-Good cut, I-J color, SI clarity): $4,000-$8,000
- Budget natural diamond (Good-Fair cut, K+ color, SI-I clarity): $2,400-$5,000
- Perfectly flawless natural diamond: £12,000
- Eye clean white natural diamond: £4,300
- Very high-quality lab-grown diamond: £500
