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Heart|Lab Grown|IGI

1.64ct G SI1 Heart Lab Grown Diamond

ID • G/SI1 • IGI LG659468439

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG659468439

Diamond specifications and retailer prices

From $222 USD
As of November 6, 2026
Save $882 USD (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,104 USD at MOH London · As of November 2, 2026
View at MOH London

About this 1.64ct lab-grown heart diamond

This 1.64ct lab-grown heart sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG659468439 or 659468439. Listed at 12 retailers as of November 2, 2026, with prices from $222 to $1,104, a $882 spread on the same certified stone. MOH London lists it at $1,104. 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

1.64
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.6°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG659468439
Dimensions7.35 × 8.28 × 4.77 mm
L/W Ratio1.13
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.35 mm8.28 mm1.64 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG659468439
Side View
Table 58.0%Crown 34.6°Girdle: MED-THKPavilion 40.2°Culet: NoneDepth 57.6%

Caratlytics Score

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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: Nov 6
Current: $1,104 USD|Low: $213 USD|High: $1,118 USD|Avg: $524 USD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 7$222 USD
Retailer 11$258 USD
Retailer 3$275 USD
Retailer 8$275 USD
Retailer 2$350 USD
Retailer 10$471 USD
Retailer 5$507 USD
Retailer 4$534 USD
Retailer 12$556 USD
Retailer 9$886 USD
Retailer 6$889 USD
MOH London$1,104 USD

46 data points across 12 retailers

12 retailers$222 USD to $1,104 USD

A
Cheapest Retailer
-
$222 USD
A
Retailer 2
-
$258 USD
View
A
Retailer 3
-
$275 USD
View
Retailer 4
-
$275 USD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$350 USD
View
B+
Retailer 6
-
$471 USD
View
B+
Retailer 7
-
$507 USD
View
B+
Retailer 8
-
$534 USD
View
B+
Retailer 9
-
$556 USD
View
B
Retailer 10
-
$886 USD
View
B
Retailer 11
-
$889 USD
View
Most Expensive
B
MOH London
LG659468439 · Nov 2
$1,104 USD
£869 GBP
View
11 more retailers have this diamond
Prices start from $222 USDSave up to $882 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
1.64ct Heart
$222 USD