How much does a 1.00 to 1.49ct F SI1 natural oval diamond cost?

As of October 2026, 1.00 to 1.49ct F SI1 natural oval diamonds typically cost $3,244 AUD to $8,604 AUD, with a median price of $5,035 AUD. There are currently 719 diamonds matching this specification available across retailers.

Where can I find the best price on a F SI1 oval diamond?

About 34% of these diamonds are available at multiple retailers, with an average price spread of 47%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct F SI1 Natural Oval

Quick answer

As of October 2026, there are 719 natural oval diamonds with F colour and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $3,244 AUD to $8,604 AUD, with a median of $5,035 AUD. At least 63 retailers stock this exact specification, and 34% of the stones appear at more than one of them, with an average price spread of 47%. Half of all listings fall between $3,739 AUD and $5,848 AUD per carat. The same specification in lab grown form lists at a median of about $694 AUD per carat. Over the last 30 days the median price moved +0.2% and the number of listings moved -6.1%.

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 natural stones in the index: 2,655 USD per carat, +10.2% 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

719

Lowest Price

$1,915 AUD

Highest Price

$17,084 AUD

Average Price

$5,600 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

34.4%

Price Spread

47.0%

30-Day Price Trend

+0.2%

30-Day Supply Change

-6.1%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$3,153/ct

10th Percentile

$2,285

Median

$3,153

90th Percentile

$5,313

Score Distribution

1.8K diamonds scored across 4 quality tiers

Excellent

211 (11.7%)

Very Good

431 (23.9%)

Good

373 (20.7%)

Average

789 (43.7%)

Find Your Diamond

Search 719 F SI1 oval diamonds and compare prices.

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Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

F SI2SI2 inclusions are not visible without magnification

Save 19%

Lab-Grown F SI1Same specifications, lab-grown origin

Save 82%

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