How much does a 5.00ct+ I VS1 lab grown radiant diamond cost?

As of October 2026, 5.00ct+ I VS1 lab grown radiant diamonds typically cost $1,106 AUD to $10,704 AUD, with a median price of $3,102 AUD. There are currently 31 diamonds matching this specification available across retailers.

Where can I find the best price on a I VS1 radiant diamond?

About 45% of these diamonds are available at multiple retailers, with an average price spread of 58%. A comparison tool like Carat Hunter lets you see all the prices side by side.

5.00ct+ I VS1 Lab Grown Radiant

Quick answer

As of October 2026, there are 31 lab grown radiant diamonds with I colour and VS1 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run $1,106 AUD to $10,704 AUD, with a median of $3,102 AUD. At least 25 retailers stock this exact specification, and 45% of the stones appear at more than one of them, with an average price spread of 58%. Half of all listings fall between $723 AUD and $1,234 AUD per carat. Over the last 30 days the median price moved -20.9% and the number of listings moved +25.5%.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, September 2026: natural diamonds at 2,335 USD per carat and lab-grown at 443 USD per carat, a natural to lab ratio of 5.3 to 1. Radiant lab grown stones in the index: 474 USD per carat, -2.1% month on month. See the full index release

Figures come from current listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: October 2026

Available

Lowest Price

$858 AUD

Highest Price

$101,199 AUD

Average Price

$8,011 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

45.0%

Price Spread

57.9%

30-Day Price Trend

-20.9%

30-Day Supply Change

+25.5%

Volatility (30d)

0.10

Price Range

Price per carat distribution across retailers

$621/ct

10th Percentile

$459

Median

$621

90th Percentile

$1,343

Score Distribution

60 diamonds scored across 4 quality tiers

Excellent

17 (28.3%)

Very Good

12 (20.0%)

Good

14 (23.3%)

Average

17 (28.3%)

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Related Specifications

D IF D VVS1 D VVS2 D VS1 D VS2 D SI1 E IF E VVS1 E VVS2 E VS1 E VS2 E SI1 F IF F VVS1 F VVS2 F VS1 F VS2 F SI1 G IF G VVS1 G VVS2 G VS1 G VS2 G SI1 H IF H VVS1 H VVS2 H VS1 H VS2 H SI1 I IF I VVS1 I VVS2 I VS1 I VS2 I SI1