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Heart|Lab Grown|IGI

1.51ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG795631377

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG795631377

Diamond specifications and retailer prices

From $442 USD
As of October 28, 2026
Save $758 USD (63%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,200 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.51ct lab-grown heart diamond

This 1.51ct lab-grown heart sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG795631377 or 795631377. Listed at 5 retailers as of October 28, 2026, with prices from $442 to $1,200, a $758 spread on the same certified stone. MOH London lists it at $1,200. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG795631377
Dimensions8.04 × 6.70 × 4.70 mm
L/W Ratio1.20
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.04 mm6.70 mm1.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG795631377
Side View
Table 61.0%Crown 34.5°Girdle: STK-THKPavilion 39.8°Culet: NoneDepth 58.5%

Caratlytics Score

How it works →
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 28
Current: $1,200 USD|Low: $423 USD|High: $1,200 USD|Avg: $647 USD|+13.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 29, 2026
Retailer 4$442 USD
Retailer 3$457 USD
Retailer 2$468 USD
Retailer 5$874 USD
MOH London$1,200 USD

26 data points across 5 retailers

5 retailers$442 USD to $1,200 USD

B+
Cheapest Retailer
-
$442 USD
A
Retailer 2
-
$457 USD
View
A
Retailer 3
-
$468 USD
£369 GBP
View
B
Retailer 4
-
$874 USD
View
Most Expensive
B
MOH London
LG795631377 · Oct 29
$1,200 USD
£945 GBP
View
4 more retailers have this diamond
Prices start from $442 USDSave up to $758 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
1.51ct Heart
$442 USD