How much does a 0.50 to 0.74ct D SI1 natural radiant diamond cost?

As of November 2026, 0.50 to 0.74ct D SI1 natural radiant diamonds typically cost €509 EUR to €1,550 EUR, with a median price of €788 EUR. There are currently 161 diamonds matching this specification available across retailers.

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

About 30% of these diamonds are available at multiple retailers, with an average price spread of 56%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct D SI1 Natural Radiant

Quick answer

As of November 2026, there are 161 natural radiant diamonds with D color and SI1 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run €509 EUR to €1,550 EUR, with a median of €788 EUR. At least 61 retailers stock this exact specification, and 30% of the stones appear at more than one of them, with an average price spread of 56%. Half of all listings fall between €1,191 EUR and €2,032 EUR per carat. The same specification in lab grown form lists at a median of about €565 EUR per carat. Over the last 30 days the median price moved +1.1% and the number of listings moved +6.7%.

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. Radiant natural stones in the index: 3,091 USD per carat, +13.2% 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: November 2026

Available

161

Lowest Price

€435 EUR

Highest Price

€3,276 EUR

Average Price

€932 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

29.5%

Price Spread

56.1%

30-Day Price Trend

+1.1%

30-Day Supply Change

+6.7%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,673/ct

10th Percentile

$1,120

Median

$1,673

90th Percentile

$3,130

Score Distribution

492 diamonds scored across 4 quality tiers

Excellent

80 (16.3%)

Very Good

128 (26.0%)

Good

127 (25.8%)

Average

157 (31.9%)

Find Your Diamond

Search 161 D SI1 radiant 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 6%

Lab-Grown D SI1Same specifications, lab-grown origin

Save 62%

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