How much does a 1.50 to 1.99ct D SI2 natural oval diamond cost?

As of October 2026, 1.50 to 1.99ct D SI2 natural oval diamonds typically cost $6,854 CAD to $19,737 CAD, with a median price of $10,971 CAD. There are currently 418 diamonds matching this specification available across retailers.

Where can I find the best price on a D SI2 oval diamond?

About 34% of these diamonds are available at multiple retailers, with an average price spread of 48%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct D SI2 Natural Oval

Quick answer

As of October 2026, there are 418 natural oval diamonds with D color and SI2 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run $6,854 CAD to $19,737 CAD, with a median of $10,971 CAD. At least 55 retailers stock this exact specification, and 34% of the stones appear at more than one of them, with an average price spread of 48%. Half of all listings fall between $5,425 CAD and $8,702 CAD per carat. The same specification in lab grown form lists at a median of about $459 CAD per carat. Over the last 30 days the median price moved -1.3% and the number of listings moved -0.8%.

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

418

Lowest Price

$3,454 CAD

Highest Price

$35,368 CAD

Average Price

$12,153 CAD

Market Intelligence

Retailers Selling

Cross Retailer %

34.0%

Price Spread

48.4%

30-Day Price Trend

-1.3%

30-Day Supply Change

-0.8%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$4,841/ct

10th Percentile

$3,172

Median

$4,841

90th Percentile

$7,706

Score Distribution

1.3K diamonds scored across 4 quality tiers

Excellent

279 (21.6%)

Very Good

289 (22.4%)

Good

242 (18.7%)

Average

482 (37.3%)

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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