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Heart|Lab Grown|IGI

4.05ct E IF Heart Lab Grown Diamond

ID • E/IF • IGI LG665423550

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG665423550

Diamond specifications and retailer prices

From $3,476 USD
As of October 29, 2026
Save $9,086 USD (72%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $12,562 USD at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 4.05ct lab-grown heart diamond

This 4.05ct lab-grown heart 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 LG665423550 or 665423550. Listed at 22 retailers as of October 29, 2026, with prices from $3,476 to $12,562, a $9,086 spread on the same certified stone. Taylor and Hart lists it at $12,562. 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 angle41.8°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG665423550
Dimensions10.65 × 9.71 × 6.47 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizePointed
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
10.65 mm9.71 mm4.05 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG665423550
Side View
Table 62.0%Crown 41.8°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 60.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: $4,739 USD|Low: $3,476 USD|High: $17,518 USD|Avg: $8,993 USD|-25.3%
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
Retailer 16
Taylor and Hart
October 31, 2026
Retailer 3$3,476 USD
Retailer 16$3,605 USD
Retailer 12$3,760 USD
Retailer 2$4,186 USD
Retailer 1$4,739 USD
Retailer 6$5,069 USD
Retailer 14$5,152 USD
Retailer 11$5,770 USD
Retailer 15$5,776 USD
Retailer 10$7,665 USD
Retailer 4$8,636 USD
Retailer 13$9,178 USD
Retailer 9$9,950 USD
Retailer 5$9,988 USD
Retailer 8$10,750 USD
Retailer 7$12,109 USD
Taylor and Hart$12,562 USD

37 data points across 17 retailers

22 retailers$3,476 USD to $12,562 USD

A
Cheapest Retailer
-
$3,476 USD
Final sale: no returns
A
Retailer 2
-
$3,605 USD
View
A
Retailer 3
-
$3,760 USD
View
A
Retailer 4
-
$4,186 USD
HK$32,700 HKD
View
Retailer 5
-
$4,242 USD
View
Price last confirmed 14 days ago
Retailer 6
-
$4,446 USD
View
Price last confirmed 32 days ago
A
Retailer 7
-
$4,739 USD
£3,731 GBP
View
Retailer 8
-
$4,921 USD
View
Price last confirmed 28 days ago
Retailer 9
-
$4,921 USD
View
Price last confirmed 14 days ago
A
Retailer 10
-
$5,069 USD
View
A
Retailer 11
-
$5,152 USD
View
A
Retailer 12
-
$5,770 USD
€5,495 EUR
View
A
Retailer 13
-
$5,776 USD
View
Retailer 14
-
$6,149 USD
View
Price last confirmed 14 days ago
A
Retailer 15
-
$7,665 USD
ZAR 123,822 ZAR
View
B+
Retailer 16
-
$8,636 USD
View
B+
Retailer 17
-
$9,178 USD
£7,227 GBP
View
B+
Retailer 18
-
$9,950 USD
View
B+
Retailer 19
-
$9,988 USD
View
Retailer 20
-
$10,750 USD
A$16,539 AUD
View
Price last confirmed 8 days ago
B+
Retailer 21
-
$12,109 USD
SGD 16,364 SGD
View
Most Expensive
B+
Taylor and Hart
JPUALNZ · Oct 30
$12,562 USD
View
21 more retailers have this diamond
Prices start from $3,476 USDSave up to $9,086 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 Heart
$3,476 USD