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Round|Lab Grown|IGI

4.05ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG811634833

Shape and cutting style on the report: Round brilliant

Certificate IGI LG811634833

Diamond specifications and retailer prices

From $4,379 SGD
$3,425 USD
As of October 30, 2026
Save $13,596 SGD (76%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $17,974 SGD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 4.05ct lab-grown round diamond

This 4.05ct lab-grown round sits in the three to five carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG811634833 or 811634833. Listed at 14 retailers as of October 30, 2026, with prices from $4,379 to $17,974, a $13,596 spread on the same certified stone. Brilliant Earth lists it at $17,974. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.05
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811634833
Dimensions10.27 × 10.32 × 6.22 mm
L/W Ratio1.00
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
10.27 mm10.32 mm4.05 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811634833
Side View
Table 58.0%Crown 34.1°Girdle: MediumPavilion 40.7°Culet: NoneDepth 60.4%

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: Oct 30
Current: $17,974 SGD|Low: $4,379 SGD|High: $26,376 SGD|Avg: $11,383 SGD|-22.0%
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
Retailer 14
October 31, 2026
Retailer 12$4,379 SGD
Retailer 3$5,302 SGD
Retailer 10$5,569 SGD
Retailer 7$5,851 SGD
Retailer 14$6,535 SGD
Retailer 2$6,928 SGD
Retailer 11$8,878 SGD
Retailer 8$9,253 SGD
Retailer 5$10,919 SGD
Retailer 9$11,078 SGD
Retailer 13$11,391 SGD
Retailer 6$15,143 SGD
Retailer 4$16,822 SGD
Brilliant Earth$17,974 SGD

42 data points across 14 retailers

14 retailers$4,379 SGD to $17,974 SGD

A
Cheapest Retailer
-
$4,379 SGD
$3,425 USD
A
Retailer 2
-
$5,302 SGD
HK$32,400 HKD
View
A
Retailer 3
-
$5,569 SGD
$4,356 USD
View
A
Retailer 4
-
$5,851 SGD
£3,603 GBP
View
A
Retailer 5
-
$6,535 SGD
$5,112 USD
View
A
Retailer 6
-
$6,928 SGD
€5,161 EUR
View
Retailer 7
-
$8,878 SGD
$6,945 USD
View
Price last confirmed 13 days ago
B+
Retailer 8
-
$9,253 SGD
ZAR 116,936 ZAR
View
B+
Retailer 9
-
$10,919 SGD
$8,541 USD
View
B+
Retailer 10
-
$11,078 SGD
£6,823 GBP
View
B+
Retailer 11
-
$11,391 SGD
$8,910 USD
View
B
Retailer 12
-
$15,143 SGD
$11,845 USD
View
B
Retailer 13
-
$16,822 SGD
$13,159 USD
View
Most Expensive
B
Brilliant Earth
21144075A · Oct 31
$17,974 SGD
$14,060 USD
View
13 more retailers have this diamond
Prices start from $4,379 SGDSave up to $13,596 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
4.05ct Round
$4,379 SGD