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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 $6,077 NZD
$3,425 USD
As of November 1, 2026
Save $18,870 NZD (76%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $24,947 NZD 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 31, 2026, with prices from $6,077 to $24,947, a $18,870 spread on the same certified stone. Brilliant Earth lists it at $24,947. 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: Nov 1
Current: $24,947 NZD|Low: $6,077 NZD|High: $36,607 NZD|Avg: $15,732 NZD|-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
November 1, 2026
Retailer 12$6,077 NZD
Retailer 3$7,358 NZD
Retailer 10$7,729 NZD
Retailer 2$8,120 NZD
Retailer 14$9,070 NZD
Retailer 7$9,615 NZD
Retailer 11$12,323 NZD
Retailer 8$12,843 NZD
Retailer 5$15,154 NZD
Retailer 9$15,375 NZD
Retailer 13$15,809 NZD
Retailer 6$21,016 NZD
Retailer 4$23,348 NZD
Brilliant Earth$24,947 NZD

43 data points across 14 retailers

14 retailers$6,077 NZD to $24,947 NZD

A
Cheapest Retailer
-
$6,077 NZD
$3,425 USD
A
Retailer 2
-
$7,358 NZD
HK$32,400 HKD
View
A
Retailer 3
-
$7,729 NZD
$4,356 USD
View
A
Retailer 4
-
$8,120 NZD
£3,603 GBP
View
A
Retailer 5
-
$9,070 NZD
$5,112 USD
View
A
Retailer 6
-
$9,615 NZD
€5,161 EUR
View
Retailer 7
-
$12,323 NZD
$6,945 USD
View
Price last confirmed 14 days ago
B+
Retailer 8
-
$12,843 NZD
ZAR 116,936 ZAR
View
B+
Retailer 9
-
$15,154 NZD
$8,541 USD
View
B+
Retailer 10
-
$15,375 NZD
£6,823 GBP
View
B+
Retailer 11
-
$15,809 NZD
$8,910 USD
View
B
Retailer 12
-
$21,016 NZD
$11,845 USD
View
B
Retailer 13
-
$23,348 NZD
$13,159 USD
View
Most Expensive
B
Brilliant Earth
21144075A · Oct 31
$24,947 NZD
$14,060 USD
View
13 more retailers have this diamond
Prices start from $6,077 NZDSave up to $18,870 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
4.05ct Round
$6,077 NZD