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Round|Lab Grown|IGI

1.64ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG844623932

Shape and cutting style on the report: Round brilliant

Certificate IGI LG844623932

Diamond specifications and retailer prices

From HK$3,040 HKD
€369 EUR
As of October 29, 2026
Save HK$4,335 HKD (59%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: HK$8,271 HKD at MOH London · As of October 26, 2026
View at MOH London

About this 1.64ct lab-grown round diamond

This 1.64ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG844623932 or 844623932. Listed at 3 retailers as of October 29, 2026, with a 143% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844623932
Dimensions7.59 × 7.55 × 4.61 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.59 mm7.55 mm1.64 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844623932
Side View
Table 59.0%Crown 33.9°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 60.9%

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 29
Current: HK$8,271 HKD|Low: HK$3,023 HKD|High: HK$8,300 HKD|Avg: HK$6,054 HKD|-0.4%
MOH London
Retailer 2
Retailer 3
October 29, 2026
Retailer 2HK$3,040 HKD
Retailer 3HK$7,375 HKD
MOH LondonHK$8,271 HKD

7 data points across 3 retailers

3 retailersHK$3,040 HKD to HK$7,375 HKD

A
Cheapest Retailer
-
HK$3,040 HKD
€369 EUR
B
Retailer 2
-
HK$7,375 HKD
$940 USD
View
Most Expensive
MOH London
LG844623932 · Oct 26
HK$8,271 HKD
£830 GBP
View
Price last confirmed 7 days ago
2 more retailers have this diamond
Prices start from HK$3,040 HKDSave up to HK$4,335 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 Round
HK$3,040 HKD