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

As of November 6, 2026, 1.00 to 1.49ct L SI1 natural oval diamonds typically cost $1,329 CAD to $3,445 CAD, with a median price of $1,994 CAD. There are currently 284 diamonds matching this specification available across retailers.

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

About 58% of these diamonds are available at multiple retailers, with an average price spread of 55%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct L SI1 Natural Oval

Quick answer

As of November 6, 2026, there are 284 natural oval diamonds with L color and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $1,329 CAD to $3,445 CAD, with a median of $1,994 CAD. Half of all listings fall between $1,451 CAD and $2,467 CAD per carat. The same specification in lab grown form lists at a median of about $743 CAD per carat. Over the last 30 days the median price moved +0.1% and the number of listings moved +16.1%.

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

Caratlytics Diamond Price Index, October 2026: natural diamonds at 2,202 USD per carat and lab-grown at 462 USD per carat, a natural to lab ratio of 4.8 to 1. Oval natural stones in the index: 2,512 USD per carat, -7.2% month on month. See the full index release

Figures come from current listings across more than 125 retailers. The index is a monthly release.

Last updated: November 6, 2026

Available

284

Lowest Price

$948 CAD

Highest Price

$8,727 CAD

Average Price

$2,234 CAD

Market Intelligence

Cross Retailer %

58.1%

Price Spread

54.6%

30-Day Price Trend

+0.1%

30-Day Supply Change

+16.1%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,323/ct

10th Percentile

$908

Median

$1,323

90th Percentile

$2,221

Score Distribution

284 diamonds scored across 4 quality tiers

Excellent

50 (17.6%)

Very Good

92 (32.4%)

Good

81 (28.5%)

Average

61 (21.5%)

Find Your Diamond

Search 284 L SI1 oval diamonds and compare prices.

Search Diamonds

Consider Instead

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

M SI1

Save 8%

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