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Round|Lab Grown|IGI

4.05ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG731588844

Shape and cutting style on the report: Round brilliant

Certificate IGI LG731588844

Diamond specifications and retailer prices

From €1,427 EUR
$1,594 USD
As of October 29, 2026
Save €6,844 EUR (83%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: €8,271 EUR 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG731588844 or 731588844. Listed at 23 retailers as of October 29, 2026, with prices from €1,427 to €8,271, a €6,844 spread on the same certified stone. Brilliant Earth lists it at €8,271. 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
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG731588844
Dimensions10.32 × 10.37 × 6.20 mm
L/W Ratio1.00
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
10.32 mm10.37 mm4.05 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG731588844
Side View
Table 58.0%Crown 33.8°Girdle: MediumPavilion 40.6°Culet: NoneDepth 59.9%

Caratlytics Score

How it works →
A+
Exceptional
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: €8,271 EUR|Low: €1,427 EUR|High: €8,271 EUR|Avg: €3,354 EUR
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
Retailer 19
Retailer 20
Retailer 21
November 1, 2026
Retailer 5€1,427 EUR
Retailer 12€1,553 EUR
Retailer 8€1,598 EUR
Retailer 9€1,655 EUR
Retailer 18€1,808 EUR
Retailer 7€1,873 EUR
Retailer 20€1,913 EUR
Retailer 13€2,317 EUR
Retailer 21€2,603 EUR
Retailer 15€2,607 EUR
Retailer 19€2,927 EUR
Retailer 11€3,103 EUR
Retailer 6€3,501 EUR
Retailer 16€3,524 EUR
Retailer 2€3,547 EUR
Retailer 4€4,461 EUR
Retailer 17€4,753 EUR
Retailer 3€4,816 EUR
Retailer 10€5,534 EUR
Retailer 14€5,815 EUR
Brilliant Earth€8,271 EUR

39 data points across 21 retailers

23 retailers€1,427 EUR to €8,271 EUR

A+
Cheapest Retailer
-
€1,427 EUR
$1,594 USD
A
Retailer 2
-
€1,553 EUR
$1,735 USD
View
A
Retailer 3
-
€1,598 EUR
$1,785 USD
View
Final sale: no returns
A
Retailer 4
-
€1,655 EUR
$1,849 USD
View
Retailer 5
-
€1,655 EUR
$1,849 USD
View
Price last confirmed 19 days ago
A
Retailer 6
-
€1,808 EUR
$2,020 USD
View
A
Retailer 7
-
€1,873 EUR
$2,092 USD
View
A
Retailer 8
-
€1,913 EUR
HK$16,700 HKD
View
A
Retailer 9
-
€2,317 EUR
£2,038 GBP
View
A
Retailer 10
-
€2,603 EUR
$2,908 USD
View
A
Retailer 11
-
€2,607 EUR
View
A
Retailer 12
-
€2,927 EUR
$3,270 USD
View
A
Retailer 13
-
€3,103 EUR
$3,467 USD
View
A
Retailer 14
-
€3,501 EUR
$3,911 USD
View
A
Retailer 15
-
€3,524 EUR
ZAR 63,597 ZAR
View
A
Retailer 16
-
€3,547 EUR
A$6,096 AUD
View
A
Retailer 17
-
€4,255 EUR
$4,754 USD
View
A
Retailer 18
-
€4,461 EUR
$4,984 USD
View
A
Retailer 19
-
€4,753 EUR
£4,181 GBP
View
A
Retailer 20
-
€4,816 EUR
$5,381 USD
View
B+
Retailer 21
-
€5,534 EUR
SGD 8,355 SGD
View
B+
Retailer 22
-
€5,815 EUR
$6,496 USD
View
Most Expensive
B+
Brilliant Earth
19056508A · Oct 31
€8,271 EUR
$9,240 USD
View
22 more retailers have this diamond
Prices start from €1,427 EURSave up to €6,844 EUR

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
€1,427 EUR