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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 €199 EUR
$222 USD
As of October 30, 2026
Save €789 EUR (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €988 EUR at MOH London · As of November 1, 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 October 30, 2026, with prices from €199 to €988, a €789 spread on the same certified stone. MOH London lists it at €988. 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: Oct 30
Current: €988 EUR|Low: €191 EUR|High: €1,000 EUR|Avg: €469 EUR|-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 1, 2026
Retailer 7€199 EUR
Retailer 11€231 EUR
Retailer 3€246 EUR
Retailer 8€246 EUR
Retailer 2€316 EUR
Retailer 10€422 EUR
Retailer 5€459 EUR
Retailer 4€478 EUR
Retailer 12€498 EUR
Retailer 9€793 EUR
Retailer 6€796 EUR
MOH London€988 EUR

43 data points across 12 retailers

12 retailers€199 EUR to €988 EUR

A
Cheapest Retailer
-
€199 EUR
$222 USD
A
Retailer 2
-
€231 EUR
$258 USD
View
A
Retailer 3
-
€246 EUR
$275 USD
View
Retailer 4
-
€246 EUR
$275 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
€316 EUR
£278 GBP
View
B+
Retailer 6
-
€422 EUR
$471 USD
View
B+
Retailer 7
-
€459 EUR
£404 GBP
View
B+
Retailer 8
-
€478 EUR
$534 USD
View
B+
Retailer 9
-
€498 EUR
$556 USD
View
B
Retailer 10
-
€793 EUR
$886 USD
View
B
Retailer 11
-
€796 EUR
$889 USD
View
Most Expensive
B
MOH London
LG659468439 · Nov 1
€988 EUR
£869 GBP
View
11 more retailers have this diamond
Prices start from €199 EURSave up to €789 EUR

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
€199 EUR