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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 $4,168 AUD
£2,305 GBP
As of October 30, 2026
Save $18,581 AUD (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $25,340 AUD 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
Colour
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: $19,760 AUD|Low: $2,582 AUD|High: $30,066 AUD|Avg: $12,244 AUD|-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$3,616 AUD
Retailer 2$4,168 AUD
Retailer 9$5,878 AUD
Retailer 8$5,879 AUD
Retailer 11$5,985 AUD
Retailer 13$8,979 AUD
Retailer 7$9,638 AUD
Retailer 5$10,072 AUD
Retailer 3$10,679 AUD
Retailer 10$11,350 AUD
Retailer 4$13,893 AUD
Brilliant Earth$19,760 AUD
Retailer 12$22,749 AUD
Retailer 6$25,263 AUD

19 data points across 14 retailers

13 retailers$4,168 AUD to $22,749 AUD

Retailer 1
-
$3,548 AUD
$2,492 USD
Price last confirmed 29 days ago
Retailer 2
-
$4,020 AUD
$2,824 USD
View
Price last confirmed 28 days ago
A
Retailer 3
-
$4,168 AUD
£2,305 GBP
View
A
Retailer 4
-
$5,878 AUD
$4,129 USD
View
A
Retailer 5
-
$5,879 AUD
$4,130 USD
View
A
Retailer 6
-
$5,985 AUD
$4,204 USD
View
Retailer 7
-
$6,504 AUD
$4,569 USD
View
Price last confirmed 30 days ago
B+
Retailer 8
-
$8,979 AUD
$6,307 USD
View
B+
Retailer 9
-
$9,638 AUD
$6,770 USD
View
B+
Retailer 10
-
$11,350 AUD
£6,278 GBP
View
B
Retailer 11
-
$19,760 AUD
$13,880 USD
View
B
Retailer 12
-
$22,749 AUD
$15,980 USD
View
Most Expensive
Brilliant Earth
21412100B · Oct 21
$25,340 AUD
$17,800 USD
View
Price last confirmed 9 days ago
12 more retailers have this diamond
Prices start from $4,168 AUDSave up to $18,581 AUD

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
$4,168 AUD