CaratHunter
Plans
Round|Lab Grown|IGI

1.23ct F FL Round Lab Grown Diamond

ID • F/FL • IGI LG818644662

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818644662

Diamond specifications and retailer prices

From $438 SGD
As of November 4, 2026
Save $1,926 SGD (81%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,364 SGD at Brilliant Earth · As of November 3, 2026
View at Brilliant Earth

About this 1.23ct lab-grown round diamond

This 1.23ct lab-grown round sits in the classic one-carat band, graded F colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818644662 or 818644662. Listed at 19 retailers as of November 3, 2026, with prices from $438 to $2,364, a $1,926 spread on the same certified stone. Brilliant Earth lists it at $2,364. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
F
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818644662
Dimensions6.80 × 6.85 × 4.24 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.80 mm6.85 mm1.23 ctF / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818644662
Side View
Table 58.0%Crown 35.6°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $2,364 SGD|Low: $438 SGD|High: $3,105 SGD|Avg: $1,160 SGD|-23.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 5, 2026
Retailer 4$438 SGD
Retailer 3$486 SGD
Retailer 13$652 SGD
Retailer 12$684 SGD
Retailer 7$782 SGD
Retailer 9$782 SGD
Retailer 11$837 SGD
Retailer 6$852 SGD
Retailer 10$1,265 SGD
Retailer 5$1,560 SGD
Retailer 8$1,744 SGD
Retailer 2$1,940 SGD
Brilliant Earth$2,364 SGD

43 data points across 13 retailers

19 retailers$438 SGD to $2,364 SGD

A
Cheapest Retailer
-
$438 SGD
Final sale: no returns
A
Retailer 2
-
$455 SGD
View
Retailer 3
-
$479 SGD
View
Price last confirmed 65 days ago
Retailer 4
-
$486 SGD
View
Price last confirmed 11 days ago
A
Retailer 5
-
$539 SGD
View
B+
Retailer 6
-
$652 SGD
View
A
Retailer 7
-
$684 SGD
View
B+
Retailer 8
-
$782 SGD
View
B+
Retailer 9
-
$782 SGD
View
B+
Retailer 10
-
$837 SGD
View
B+
Retailer 11
-
$852 SGD
View
B+
Retailer 12
-
$869 SGD
View
B
Retailer 13
-
$1,265 SGD
View
B
Retailer 14
-
$1,560 SGD
View
B
Retailer 15
-
$1,620 SGD
View
B
Retailer 16
-
$1,740 SGD
View
B
Retailer 17
-
$1,744 SGD
View
B
Retailer 18
-
$1,940 SGD
View
Most Expensive
B
Brilliant Earth
21370465A · Nov 3
$2,364 SGD
$1,850 USD
View
18 more retailers have this diamond
Prices start from $438 SGDSave up to $1,926 SGD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.23ct Round
$438 SGD