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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 $1,594 USD
As of October 29, 2026
Save $7,646 USD (83%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $9,240 USD 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 $1,594 to $9,240, a $7,646 spread on the same certified stone. Brilliant Earth lists it at $9,240. 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

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A+
Exceptional
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $9,240 USD|Low: $1,594 USD|High: $9,240 USD|Avg: $3,747 USD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
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Retailer 10
Retailer 11
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Retailer 13
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Retailer 21
November 1, 2026
Retailer 5$1,594 USD
Retailer 12$1,735 USD
Retailer 8$1,785 USD
Retailer 9$1,849 USD
Retailer 18$2,020 USD
Retailer 7$2,092 USD
Retailer 20$2,138 USD
Retailer 13$2,589 USD
Retailer 21$2,908 USD
Retailer 15$2,913 USD
Retailer 19$3,270 USD
Retailer 11$3,467 USD
Retailer 6$3,911 USD
Retailer 16$3,937 USD
Retailer 2$3,962 USD
Retailer 4$4,984 USD
Retailer 17$5,310 USD
Retailer 3$5,381 USD
Retailer 10$6,183 USD
Retailer 14$6,496 USD
Brilliant Earth$9,240 USD

39 data points across 21 retailers

23 retailers$1,594 USD to $9,240 USD

A+
Cheapest Retailer
-
$1,594 USD
A
Retailer 2
-
$1,735 USD
View
A
Retailer 3
-
$1,785 USD
View
Final sale: no returns
A
Retailer 4
-
$1,849 USD
View
Retailer 5
-
$1,849 USD
View
Price last confirmed 19 days ago
A
Retailer 6
-
$2,020 USD
View
A
Retailer 7
-
$2,092 USD
View
A
Retailer 8
-
$2,138 USD
HK$16,700 HKD
View
A
Retailer 9
-
$2,589 USD
£2,038 GBP
View
A
Retailer 10
-
$2,908 USD
View
A
Retailer 11
-
$2,913 USD
€2,774 EUR
View
A
Retailer 12
-
$3,270 USD
View
A
Retailer 13
-
$3,467 USD
View
A
Retailer 14
-
$3,911 USD
View
A
Retailer 15
-
$3,937 USD
ZAR 63,597 ZAR
View
A
Retailer 16
-
$3,962 USD
A$6,096 AUD
View
A
Retailer 17
-
$4,754 USD
View
A
Retailer 18
-
$4,984 USD
View
A
Retailer 19
-
$5,310 USD
£4,181 GBP
View
A
Retailer 20
-
$5,381 USD
View
B+
Retailer 21
-
$6,183 USD
SGD 8,355 SGD
View
B+
Retailer 22
-
$6,496 USD
View
Most Expensive
B+
Brilliant Earth
19056508A · Oct 31
$9,240 USD
View
22 more retailers have this diamond
Prices start from $1,594 USDSave up to $7,646 USD

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
$1,594 USD