How much does a 0.75 to 0.99ct I I1 lab grown round diamond cost?

As of October 2026, 0.75 to 0.99ct I I1 lab grown round diamonds typically cost $398 SGD to $1,153 SGD, with a median price of $446 SGD. There are currently 3 diamonds matching this specification available across retailers.

Where can I find the best price on a I I1 round diamond?

About 38% of these diamonds are available at multiple retailers, with an average price spread of 136%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct I I1 Lab Grown Round

Quick answer

As of October 2026, there are 3 lab grown round diamonds with I colour and I1 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run $398 SGD to $1,153 SGD, with a median of $446 SGD. At least 7 retailers stock this exact specification, and 38% of the stones appear at more than one of them, with an average price spread of 136%. Half of all listings fall between $485 SGD and $1,201 SGD per carat. The same specification in natural form lists at a median of about $1,842 SGD per carat.

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. Round lab grown stones in the index: 414 USD per carat, -5.0% 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

Lowest Price

$385 SGD

Highest Price

$1,865 SGD

Average Price

$672 SGD

Market Intelligence

Retailers Selling

Cross Retailer %

38.5%

Price Spread

135.5%

Price Range

Price per carat distribution across retailers

$412/ct

10th Percentile

$332

Median

$412

90th Percentile

$1,327

Score Distribution

7 diamonds scored across 2 quality tiers

Very Good

2 (28.6%)

Good

5 (71.4%)

Find Your Diamond

Search 3 I I1 round diamonds and compare prices.

Search Diamonds

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