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Heart|Lab Grown|IGI

1.59ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG620488289

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG620488289

Diamond specifications and retailer prices

From $194 USD
As of October 27, 2026
Save $939 USD (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,133 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.59ct lab-grown heart diamond

This 1.59ct 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 LG620488289 or 620488289. Listed at 11 retailers as of October 27, 2026, with prices from $194 to $1,133, a $939 spread on the same certified stone. MOH London lists it at $1,133. 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

1.59
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620488289
Dimensions8.29 × 7.40 × 4.50 mm
L/W Ratio1.12
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.29 mm7.40 mm1.59 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG620488289
Side View
Table 60.0%Crown 32.2°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 54.3%

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: $1,133 USD|Low: $194 USD|High: $1,650 USD|Avg: $614 USD
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 3$194 USD
Retailer 14$225 USD
Retailer 7$241 USD
Retailer 12$269 USD
Retailer 8$310 USD
Retailer 13$419 USD
Retailer 2$440 USD
Retailer 11$493 USD
Retailer 4$495 USD
Retailer 9$502 USD
Retailer 10$775 USD
MOH London$1,133 USD
Retailer 5$1,134 USD
Retailer 6$1,650 USD

3 data points across 14 retailers

11 retailers$194 USD to $1,133 USD

A
Cheapest Retailer
-
$194 USD
A
Retailer 2
-
$225 USD
View
A
Retailer 3
-
$241 USD
View
A
Retailer 4
-
$269 USD
HK$2,100 HKD
View
A
Retailer 5
-
$310 USD
£244 GBP
View
B+
Retailer 6
-
$419 USD
View
A
Retailer 7
-
$440 USD
£346 GBP
View
B+
Retailer 8
-
$493 USD
View
B+
Retailer 9
-
$502 USD
View
B
Retailer 10
-
$775 USD
View
Most Expensive
B
MOH London
LG620488289 · Oct 29
$1,133 USD
£892 GBP
View
10 more retailers have this diamond
Prices start from $194 USDSave up to $939 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
1.59ct Heart
$194 USD