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Round|Lab Grown|IGI

4.09ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG790611940

Shape and cutting style on the report: Round brilliant

Certificate IGI LG790611940

Diamond specifications and retailer prices

From $4,480 AUD
$3,147 USD
As of October 29, 2026
Save $17,614 AUD (80%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $22,094 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 4.09ct lab-grown round diamond

This 4.09ct 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 LG790611940 or 790611940. Listed at 23 retailers as of October 29, 2026, with prices from $4,480 to $22,094, a $17,614 spread on the same certified stone. Brilliant Earth lists it at $22,094. 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

4.09
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG790611940
Dimensions10.30 × 10.38 × 6.33 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS 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
10.30 mm10.38 mm4.09 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG790611940
Side View
Table 57.0%Crown 33.7°Girdle: MediumPavilion 41.2°Culet: NoneDepth 61.1%

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: Oct 29
Current: $22,094 AUD|Low: $4,301 AUD|High: $25,910 AUD|Avg: $8,817 AUD|-14.7%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
October 30, 2026
Retailer 17$4,480 AUD
Retailer 7$4,873 AUD
Retailer 9$5,017 AUD
Retailer 6$5,124 AUD
Retailer 3$5,196 AUD
Retailer 10$5,196 AUD
Retailer 14$5,196 AUD
Retailer 8$6,493 AUD
Retailer 2$6,871 AUD
Retailer 16$7,313 AUD
Retailer 4$8,069 AUD
Retailer 13$8,296 AUD
Retailer 15$10,271 AUD
Retailer 11$11,058 AUD
Retailer 18$12,962 AUD
Retailer 12$13,242 AUD
Retailer 5$17,488 AUD
Brilliant Earth$22,094 AUD

43 data points across 18 retailers

23 retailers$4,480 AUD to $22,094 AUD

A
Cheapest Retailer
-
$4,480 AUD
$3,147 USD
A
Retailer 2
-
$4,873 AUD
$3,423 USD
View
A
Retailer 3
-
$5,017 AUD
$3,524 USD
View
Final sale: no returns
A
Retailer 4
-
$5,124 AUD
$3,599 USD
View
A
Retailer 5
-
$5,196 AUD
$3,650 USD
View
Retailer 6
-
$5,196 AUD
$3,650 USD
View
Price last confirmed 18 days ago
A
Retailer 7
-
$5,196 AUD
$3,650 USD
View
A
Retailer 8
-
$6,050 AUD
HK$33,200 HKD
View
A
Retailer 9
-
$6,396 AUD
$4,493 USD
View
A
Retailer 10
-
$6,493 AUD
$4,561 USD
View
A
Retailer 11
-
$6,871 AUD
£3,800 GBP
View
A
Retailer 12
-
$7,313 AUD
$5,137 USD
View
A
Retailer 13
-
$8,069 AUD
$5,668 USD
View
A
Retailer 14
-
$8,296 AUD
€5,550 EUR
View
Retailer 15
-
$10,271 AUD
$7,215 USD
View
Price last confirmed 13 days ago
B+
Retailer 16
-
$11,058 AUD
ZAR 125,482 ZAR
View
B+
Retailer 17
-
$12,471 AUD
$8,760 USD
View
B+
Retailer 18
-
$12,962 AUD
$9,105 USD
View
B+
Retailer 19
-
$13,242 AUD
£7,324 GBP
View
B+
Retailer 20
-
$14,411 AUD
$10,123 USD
View
B
Retailer 21
-
$17,488 AUD
SGD 16,600 SGD
View
B
Retailer 22
-
$18,141 AUD
$12,743 USD
View
Most Expensive
B
Brilliant Earth
19074416A · Oct 30
$22,094 AUD
$15,520 USD
View
22 more retailers have this diamond
Prices start from $4,480 AUDSave up to $17,614 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
4.09ct Round
$4,480 AUD