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

As of October 2026, 1.00 to 1.49ct D SI1 natural oval diamonds typically cost $2,441 USD to $6,810 USD, with a median price of $3,780 USD. There are currently 793 diamonds matching this specification available across retailers.

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

About 35% of these diamonds are available at multiple retailers, with an average price spread of 46%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct D SI1 Natural Oval

Quick answer

As of October 2026, there are 793 natural oval diamonds with D color and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $2,441 USD to $6,810 USD, with a median of $3,780 USD. At least 65 retailers stock this exact specification, and 35% of the stones appear at more than one of them, with an average price spread of 46%. Half of all listings fall between $2,877 USD and $4,465 USD per carat. The same specification in lab grown form lists at a median of about $454 USD per carat. Over the last 30 days the median price moved -0.6% and the number of listings moved -0.1%.

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

793

Lowest Price

$1,012 USD

Highest Price

$13,560 USD

Average Price

$4,324 USD

Market Intelligence

Retailers Selling

Cross Retailer %

35.3%

Price Spread

46.5%

30-Day Price Trend

-0.6%

30-Day Supply Change

-0.1%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$3,417/ct

10th Percentile

$2,504

Median

$3,417

90th Percentile

$5,762

Score Distribution

2.1K diamonds scored across 4 quality tiers

Excellent

338 (15.9%)

Very Good

569 (26.8%)

Good

333 (15.7%)

Average

886 (41.7%)

Find Your Diamond

Search 793 D 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.

D SI2SI2 inclusions are not visible without magnification

Save 15%

Lab-Grown D SI1Same specifications, lab-grown origin

Save 86%

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