How much does a 1.00 to 1.49ct I IF natural oval diamond cost?

As of October 2026, 1.00 to 1.49ct I IF natural oval diamonds typically cost £1,640 GBP to £4,051 GBP, with a median price of £2,395 GBP. There are currently 88 diamonds matching this specification available across retailers.

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

About 45% of these diamonds are available at multiple retailers, with an average price spread of 44%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct I IF Natural Oval

Quick answer

As of October 2026, there are 88 natural oval diamonds with I colour and IF clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run £1,640 GBP to £4,051 GBP, with a median of £2,395 GBP. At least 59 retailers stock this exact specification, and 45% of the stones appear at more than one of them, with an average price spread of 44%. Half of all listings fall between £2,207 GBP and £3,385 GBP per carat. The same specification in lab grown form lists at a median of about £526 GBP per carat. Over the last 30 days the median price moved +0.9% and the number of listings moved +1.8%.

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

Lowest Price

£1,073 GBP

Highest Price

£10,183 GBP

Average Price

£2,685 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

44.7%

Price Spread

43.6%

30-Day Price Trend

+0.9%

30-Day Supply Change

+1.8%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$3,599/ct

10th Percentile

$2,523

Median

$3,599

90th Percentile

$5,734

Score Distribution

193 diamonds scored across 4 quality tiers

Excellent

80 (41.5%)

Very Good

36 (18.7%)

Good

42 (21.8%)

Average

35 (18.1%)

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Consider Instead

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

J IFJ colour is visually identical to I to the naked eye

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Lab-Grown I IFSame specifications, lab-grown origin

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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