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Heart|Lab Grown|IGI

1.55ct E IF Heart Lab Grown Diamond

ID • E/IF • IGI LG635426777

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG635426777

Diamond specifications and retailer prices

From $309 USD
As of October 30, 2026
Save $2,691 USD (90%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $3,000 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.55ct lab-grown heart diamond

This 1.55ct lab-grown heart sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG635426777 or 635426777. Listed at 8 retailers as of October 30, 2026, with prices from $309 to $3,000, a $2,691 spread on the same certified stone. Brilliant Earth lists it at $3,000. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.8°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG635426777
Dimensions8.03 × 6.96 × 4.68 mm
L/W Ratio1.15
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
8.03 mm6.96 mm1.55 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG635426777
Side View
Table 57.0%Crown 39.8°Girdle: MED-STKPavilion 39°Culet: NoneDepth 58.3%

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: Oct 30
Current: $3,000 USD|Low: $218 USD|High: $3,670 USD|Avg: $1,048 USD|-18.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 10$309 USD
Retailer 2$525 USD
Retailer 8$564 USD
Retailer 11$581 USD
Retailer 7$605 USD
Retailer 12$612 USD
Retailer 9$795 USD
Retailer 5$899 USD
Retailer 4$1,149 USD
Retailer 6$1,377 USD
Retailer 3$1,731 USD
Brilliant Earth$3,000 USD

29 data points across 12 retailers

8 retailers$309 USD to $3,000 USD

A
Cheapest Retailer
-
$309 USD
Final sale: no returns
A
Retailer 2
-
$525 USD
View
A
Retailer 3
-
$564 USD
View
A
Retailer 4
-
$605 USD
View
A
Retailer 5
-
$795 USD
A$1,223 AUD
View
A
Retailer 6
-
$899 USD
View
B+
Retailer 7
-
$1,377 USD
£1,084 GBP
View
Most Expensive
B
Brilliant Earth
15304938A · Oct 31
$3,000 USD
View
7 more retailers have this diamond
Prices start from $309 USDSave up to $2,691 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
1.55ct Heart
$309 USD