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

As of September 2026, 1.00 to 1.49ct J SI1 natural oval diamonds typically cost $1,855 CAD to $5,064 CAD, with a median price of $3,057 CAD. There are currently 1,964 diamonds matching this specification available across retailers.

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

Compare prices across retailers on Carat Hunter to see all your options.

1.00 to 1.49ct J SI1 Natural Oval

Quick answer

As of September 2026, there are 1,964 natural oval diamonds with J color and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $1,855 CAD to $5,064 CAD, with a median of $3,057 CAD. At least 51 retailers stock this exact specification. Half of all listings fall between $2,109 CAD and $3,332 CAD per carat. The same specification in lab grown form lists at a median of about $2,031 CAD per carat.

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

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Oval natural stones in the index: 2,380 USD per carat, -9.6% month on month. See the full index release

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

Last updated: September 2026

Available

1,964

Lowest Price

$935 CAD

Highest Price

$17,177 CAD

Average Price

$3,300 CAD

Market Intelligence

Retailers Selling

Price Spread

46.1%

Price Range

Price per carat distribution across retailers

$1,913/ct

10th Percentile

$1,234

Median

$1,913

90th Percentile

$2,899

Score Distribution

2.0K diamonds scored across 4 quality tiers

Excellent

175 (8.9%)

Very Good

527 (26.8%)

Good

625 (31.8%)

Average

637 (32.4%)

Find Your Diamond

Search 1,964 J 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.

J SI2SI2 inclusions are not visible without magnification

Save 9%

Lab-Grown J SI1Same specifications, lab-grown origin

Save 27%

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