How much does a 1.50 to 1.99ct D IF lab grown oval diamond cost?

As of October 2026, 1.50 to 1.99ct D IF lab grown oval diamonds typically cost $435 AUD to $4,305 AUD, with a median price of $894 AUD. There are currently 2,513 diamonds matching this specification available across retailers.

Where can I find the best price on a D IF oval diamond?

About 41% of these diamonds are available at multiple retailers, with an average price spread of 107%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct D IF Lab Grown Oval

Quick answer

As of October 2026, there are 2,513 lab grown oval diamonds with D colour and IF clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run $435 AUD to $4,305 AUD, with a median of $894 AUD. At least 53 retailers stock this exact specification, and 41% of the stones appear at more than one of them, with an average price spread of 107%. Half of all listings fall between $464 AUD and $1,389 AUD per carat. The same specification in natural form lists at a median of about $16,607 AUD per carat. Over the last 30 days the median price moved -7.0% and the number of listings moved +20.7%.

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. Oval lab grown stones in the index: 453 USD per carat, -7.4% 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

2,513

Lowest Price

$337 AUD

Highest Price

$9,786 AUD

Average Price

$1,646 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

40.7%

Price Spread

106.9%

30-Day Price Trend

-7.0%

30-Day Supply Change

+20.7%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$608/ct

10th Percentile

$220

Median

$608

90th Percentile

$1,689

Score Distribution

5.8K diamonds scored across 5 quality tiers

Exceptional

72 (1.2%)

Excellent

2,117 (36.7%)

Very Good

1,483 (25.7%)

Good

1,162 (20.1%)

Average

941 (16.3%)

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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