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Round|Lab Grown|IGI

4.05ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG775630415

Shape and cutting style on the report: Round brilliant

Certificate IGI LG775630415

Diamond specifications and retailer prices

From $2,957 USD
As of October 31, 2026
Save $8,032 USD (73%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $10,989 USD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

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 LG775630415 or 775630415. Listed at 26 retailers as of October 31, 2026, with prices from $2,957 to $10,989, a $8,032 spread on the same certified stone. Taylor and Hart lists it at $10,989. 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 angle34.5°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG775630415
Dimensions10.26 × 10.21 × 6.31 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.26 mm10.21 mm4.05 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG775630415
Side View
Table 57.0%Crown 34.5°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.7%

Caratlytics Score

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A
Excellent
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 31
Current: $6,753 USD|Low: $1,977 USD|High: $11,234 USD|Avg: $5,142 USD|+0.1%
Retailer 1
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
Taylor and Hart
November 1, 2026
Retailer 7$2,950 USD
Retailer 5$3,042 USD
Retailer 6$3,145 USD
Retailer 14$3,152 USD
Retailer 9$3,155 USD
Retailer 2$3,278 USD
Retailer 8$4,206 USD
Retailer 3$4,284 USD
Retailer 4$4,333 USD
Retailer 12$4,626 USD
Retailer 11$4,906 USD
Retailer 15$6,684 USD
Retailer 1$6,753 USD
Retailer 10$7,919 USD
Retailer 13$8,452 USD
Taylor and Hart$10,989 USD

33 data points across 16 retailers

26 retailers$2,957 USD to $10,989 USD

Retailer 1
-
$2,081 USD
Price last confirmed 30 days ago
Retailer 2
-
$2,514 USD
View
Price last confirmed 29 days ago
Retailer 3
-
$2,829 USD
View
Price last confirmed 42 days ago
Retailer 4
-
$2,950 USD
View
Price last confirmed 18 days ago
Retailer 5
-
$2,950 USD
View
Price last confirmed 22 days ago
A
Retailer 6
-
$2,957 USD
View
A
Retailer 7
-
$3,042 USD
View
Final sale: no returns
Retailer 8
-
$3,145 USD
View
Price last confirmed 19 days ago
Retailer 9
-
$3,152 USD
View
Price last confirmed 7 days ago
A
Retailer 10
-
$3,152 USD
View
A
Retailer 11
-
$3,155 USD
View
A
Retailer 12
-
$3,278 USD
View
Retailer 13
-
$3,456 USD
View
Price last confirmed 41 days ago
A
Retailer 14
-
$4,206 USD
£3,312 GBP
View
A
Retailer 15
-
$4,284 USD
View
Retailer 16
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$4,323 USD
View
Price last confirmed 14 days ago
A
Retailer 17
-
$4,333 USD
View
Retailer 18
-
$4,333 USD
View
Price last confirmed 7 days ago
A
Retailer 19
-
$4,626 USD
View
A
Retailer 20
-
$4,906 USD
View
Retailer 21
-
$6,684 USD
ZAR 107,977 ZAR
View
Price last confirmed 7 days ago
Retailer 22
-
$6,753 USD
A$10,389 AUD
View
B+
Retailer 23
-
$7,919 USD
View
B+
Retailer 24
-
$8,452 USD
£6,655 GBP
View
Retailer 25
-
$9,030 USD
£7,110 GBP
View
Price last confirmed 22 days ago
Most Expensive
B
Taylor and Hart
9BVUXIU · Oct 31
$10,989 USD
View
25 more retailers have this diamond
Prices start from $2,957 USDSave up to $8,032 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
$2,957 USD