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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 HK$1,740 HKD
As of November 6, 2026
Save HK$6,910 HKD (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$8,650 HKD 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 HK$1,740 to HK$8,650, a HK$6,910 spread on the same certified stone. MOH London lists it at HK$8,650. 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
Colour
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

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: HK$8,650 HKD|Low: HK$1,669 HKD|High: HK$8,759 HKD|Avg: HK$4,111 HKD|-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 7HK$1,740 HKD
Retailer 11HK$2,022 HKD
Retailer 3HK$2,155 HKD
Retailer 8HK$2,155 HKD
Retailer 2HK$2,743 HKD
Retailer 10HK$3,691 HKD
Retailer 5HK$3,974 HKD
Retailer 4HK$4,185 HKD
Retailer 12HK$4,358 HKD
Retailer 9HK$6,944 HKD
Retailer 6HK$6,967 HKD
MOH LondonHK$8,650 HKD

46 data points across 12 retailers

12 retailersHK$1,740 HKD to HK$8,650 HKD

A
Cheapest Retailer
-
HK$1,740 HKD
A
Retailer 2
-
HK$2,022 HKD
View
A
Retailer 3
-
HK$2,155 HKD
View
Retailer 4
-
HK$2,155 HKD
View
Price last confirmed 12 days ago
A
Retailer 5
-
HK$2,743 HKD
View
B+
Retailer 6
-
HK$3,691 HKD
View
B+
Retailer 7
-
HK$3,974 HKD
View
B+
Retailer 8
-
HK$4,185 HKD
View
B+
Retailer 9
-
HK$4,358 HKD
View
B
Retailer 10
-
HK$6,944 HKD
View
B
Retailer 11
-
HK$6,967 HKD
View
Most Expensive
B
MOH London
LG659468439 · Nov 2
HK$8,650 HKD
£869 GBP
View
11 more retailers have this diamond
Prices start from HK$1,740 HKDSave up to HK$6,910 HKD

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
HK$1,740 HKD