Round|Lab Grown|IGI

4.00ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG799638998

Shape and cutting style on the report: Round brilliant

Certificate IGI LG799638998

Diamond specifications and retailer prices

From $2,928 USD
£2,305 GBP
As of October 30, 2026
Save $13,052 USD (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $17,800 USD at Brilliant Earth · As of October 21, 2026
View at Brilliant Earth

About this 4ct lab-grown round diamond

This 4ct 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 LG799638998 or 799638998. Listed at 13 retailers as of October 29, 2026, with a 446% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

4.00
Carat
E
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799638998
Dimensions10.18 × 10.12 × 6.26 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
10.18 mm10.12 mm4.00 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799638998
Side View
Table 58.0%Crown 35.4°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 61.6%

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: $13,880 USD|Low: $1,814 USD|High: $21,120 USD|Avg: $8,626 USD|-34.3%
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 30, 2026
Retailer 14$2,540 USD
Retailer 2$2,928 USD
Retailer 9$4,129 USD
Retailer 8$4,130 USD
Retailer 11$4,204 USD
Retailer 13$6,307 USD
Retailer 7$6,770 USD
Retailer 5$7,075 USD
Retailer 3$7,501 USD
Retailer 10$7,973 USD
Retailer 4$9,759 USD
Brilliant Earth$13,880 USD
Retailer 12$15,980 USD
Retailer 6$17,746 USD

20 data points across 14 retailers

13 retailers$2,928 USD to $15,980 USD

Retailer 1
-
$2,492 USD
Price last confirmed 29 days ago
Retailer 2
-
$2,824 USD
View
Price last confirmed 28 days ago
A
Retailer 3
-
$2,928 USD
£2,305 GBP
View
A
Retailer 4
-
$4,129 USD
View
A
Retailer 5
-
$4,130 USD
View
A
Retailer 6
-
$4,204 USD
View
Retailer 7
-
$4,569 USD
View
Price last confirmed 30 days ago
B+
Retailer 8
-
$6,307 USD
View
B+
Retailer 9
-
$6,770 USD
View
B+
Retailer 10
-
$7,973 USD
£6,278 GBP
View
B
Retailer 11
-
$13,880 USD
View
B
Retailer 12
-
$15,980 USD
View
Most Expensive
Brilliant Earth
21412100B · Oct 21
$17,800 USD
View
Price last confirmed 9 days ago
12 more retailers have this diamond
Prices start from $2,928 USDSave up to $13,052 USD

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
4.00ct Round
$2,928 USD