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Heart|Lab Grown|IGI

1.27ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG659468456

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG659468456

Diamond specifications and retailer prices

From $150 USD
As of October 27, 2026
Save $725 USD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $875 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.27ct lab-grown heart diamond

This 1.27ct lab-grown heart sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG659468456 or 659468456. Listed at 14 retailers as of October 27, 2026, with prices from $150 to $875, a $725 spread on the same certified stone. MOH London lists it at $875. 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

1.27
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG659468456
Dimensions7.53 × 6.62 × 4.48 mm
L/W Ratio1.14
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.53 mm6.62 mm1.27 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG659468456
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 59.5%

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 27
Current: $875 USD|Low: $144 USD|High: $881 USD|Avg: $389 USD|+0.3%
MOH London
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
October 29, 2026
Retailer 11$150 USD
Retailer 3$174 USD
Retailer 5$186 USD
Retailer 12$186 USD
Retailer 9$243 USD
Retailer 2$323 USD
Retailer 14$342 USD
Retailer 7$363 USD
Retailer 4$423 USD
Retailer 6$440 USD
Retailer 8$460 USD
Retailer 13$599 USD
Retailer 10$632 USD
MOH London$875 USD

41 data points across 14 retailers

14 retailers$150 USD to $875 USD

A
Cheapest Retailer
-
$150 USD
A
Retailer 2
-
$174 USD
View
A
Retailer 3
-
$186 USD
View
A
Retailer 4
-
$186 USD
View
A
Retailer 5
-
$243 USD
£191 GBP
View
Price last confirmed 13 days ago
A
Retailer 6
-
$323 USD
£254 GBP
View
B+
Retailer 7
-
$342 USD
View
A
Retailer 8
-
$363 USD
£286 GBP
View
B+
Retailer 9
-
$423 USD
View
B+
Retailer 10
-
$440 USD
View
B+
Retailer 11
-
$460 USD
A$708 AUD
View
B+
Retailer 12
-
$599 USD
View
B
Retailer 13
-
$632 USD
View
Most Expensive
B
MOH London
LG659468456 · Oct 29
$875 USD
£689 GBP
View
13 more retailers have this diamond
Prices start from $150 USDSave up to $725 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
1.27ct Heart
$150 USD