How much does a 0.75 to 0.99ct J SI1 natural oval diamond cost?

As of October 2026, 0.75 to 0.99ct J SI1 natural oval diamonds typically cost $1,128 CAD to $3,259 CAD, with a median price of $1,852 CAD. There are currently 223 diamonds matching this specification available across retailers.

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

About 36% of these diamonds are available at multiple retailers, with an average price spread of 62%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct J SI1 Natural Oval

Quick answer

As of October 2026, there are 223 natural oval diamonds with J color and SI1 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run $1,128 CAD to $3,259 CAD, with a median of $1,852 CAD. At least 56 retailers stock this exact specification, and 36% of the stones appear at more than one of them, with an average price spread of 62%. Half of all listings fall between $1,600 CAD and $2,843 CAD per carat. The same specification in lab grown form lists at a median of about $1,189 CAD per carat. Over the last 30 days the median price moved -4.5% 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

223

Lowest Price

$719 CAD

Highest Price

$5,943 CAD

Average Price

$2,028 CAD

Market Intelligence

Retailers Selling

Cross Retailer %

35.9%

Price Spread

61.8%

30-Day Price Trend

-4.5%

30-Day Supply Change

+6.1%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,432/ct

10th Percentile

$966

Median

$1,432

90th Percentile

$2,798

Score Distribution

687 diamonds scored across 4 quality tiers

Excellent

97 (14.1%)

Very Good

148 (21.5%)

Good

173 (25.2%)

Average

269 (39.2%)

Find Your Diamond

Search 223 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 5%

Lab-Grown J SI1Same specifications, lab-grown origin

Save 41%

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