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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 $5,584 NZD
$3,147 USD
As of October 29, 2026
Save $21,953 NZD (80%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $27,537 NZD at Brilliant Earth · As of October 31, 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 $5,584 to $27,537, a $21,953 spread on the same certified stone. Brilliant Earth lists it at $27,537. 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: $27,537 NZD|Low: $5,360 NZD|High: $32,292 NZD|Avg: $11,025 NZD|-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
November 1, 2026
Retailer 17$5,584 NZD
Retailer 7$6,073 NZD
Retailer 9$6,253 NZD
Retailer 6$6,386 NZD
Retailer 3$6,476 NZD
Retailer 10$6,476 NZD
Retailer 14$6,476 NZD
Retailer 8$8,093 NZD
Retailer 2$8,564 NZD
Retailer 16$9,115 NZD
Retailer 4$10,057 NZD
Retailer 11$10,310 NZD
Retailer 15$12,802 NZD
Retailer 12$13,782 NZD
Retailer 18$16,155 NZD
Retailer 13$16,504 NZD
Retailer 5$21,796 NZD
Brilliant Earth$27,537 NZD

44 data points across 18 retailers

23 retailers$5,584 NZD to $27,537 NZD

A
Cheapest Retailer
-
$5,584 NZD
$3,147 USD
A
Retailer 2
-
$6,073 NZD
$3,423 USD
View
A
Retailer 3
-
$6,253 NZD
$3,524 USD
View
Final sale: no returns
A
Retailer 4
-
$6,386 NZD
$3,599 USD
View
A
Retailer 5
-
$6,476 NZD
$3,650 USD
View
Retailer 6
-
$6,476 NZD
$3,650 USD
View
Price last confirmed 19 days ago
A
Retailer 7
-
$6,476 NZD
$3,650 USD
View
A
Retailer 8
-
$7,540 NZD
HK$33,200 HKD
View
A
Retailer 9
-
$7,972 NZD
$4,493 USD
View
A
Retailer 10
-
$8,093 NZD
$4,561 USD
View
A
Retailer 11
-
$8,564 NZD
£3,801 GBP
View
A
Retailer 12
-
$9,115 NZD
$5,137 USD
View
A
Retailer 13
-
$10,057 NZD
$5,668 USD
View
A
Retailer 14
-
$10,310 NZD
€5,534 EUR
View
Retailer 15
-
$12,802 NZD
$7,215 USD
View
Price last confirmed 14 days ago
B+
Retailer 16
-
$13,782 NZD
ZAR 125,482 ZAR
View
B+
Retailer 17
-
$15,543 NZD
$8,760 USD
View
B+
Retailer 18
-
$16,155 NZD
$9,105 USD
View
B+
Retailer 19
-
$16,504 NZD
£7,324 GBP
View
B+
Retailer 20
-
$17,961 NZD
$10,123 USD
View
B
Retailer 21
-
$21,796 NZD
SGD 16,600 SGD
View
B
Retailer 22
-
$22,610 NZD
$12,743 USD
View
Most Expensive
B
Brilliant Earth
19074416A · Oct 31
$27,537 NZD
$15,520 USD
View
22 more retailers have this diamond
Prices start from $5,584 NZDSave up to $21,953 NZD

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
$5,584 NZD