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Heart|Lab Grown|IGI

3.21ct G VS1 Heart Lab Grown Diamond

ID • G/VS1 • IGI LG575391916

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG575391916

Diamond specifications and retailer prices

From HK$10,113 HKD
$1,289 USD
As of October 31, 2026
Save HK$18,444 HKD (65%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: HK$28,557 HKD at MOH London · As of November 1, 2026
View at MOH London

About this 3.21ct lab-grown heart diamond

This 3.21ct lab-grown heart sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG575391916 or 575391916. Listed at 3 retailers as of October 31, 2026, with prices from HK$10,113 to HK$28,557, a HK$18,444 spread on the same certified stone. MOH London lists it at HK$28,557. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.21
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG575391916
Dimensions10.24 × 9.32 × 5.86 mm
L/W Ratio1.10
Girdle conditionFaceted
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
10.24 mm9.32 mm3.21 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG575391916
Side View
Table 57.0%Crown 33.2°Girdle: MED-STKPavilion 41°Culet: NoneDepth 57.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: HK$28,557 HKD|Low: HK$10,113 HKD|High: HK$28,906 HKD|Avg: HK$17,051 HKD|-1.2%
MOH London
Retailer 2
Retailer 3
November 1, 2026
Retailer 2HK$10,113 HKD
Retailer 3HK$12,271 HKD
MOH LondonHK$28,557 HKD

4 data points across 3 retailers

3 retailersHK$10,113 HKD to HK$28,557 HKD

A
Cheapest Retailer
-
HK$10,113 HKD
$1,289 USD
B+
Retailer 2
-
HK$12,271 HKD
$1,564 USD
View
Most Expensive
B
MOH London
LG575391916 · Nov 1
HK$28,557 HKD
£2,866 GBP
View
2 more retailers have this diamond
Prices start from HK$10,113 HKDSave up to HK$18,444 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
3.21ct Heart
HK$10,113 HKD