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Heart|Lab Grown|IGI

4.21ct D VVS2 Heart Lab Grown Diamond

ID • D/VVS2 • IGI LG778628579

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG778628579

Diamond specifications and retailer prices

From HK$10,552 HKD
$1,345 USD
As of October 30, 2026
Save HK$16,879 HKD (62%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: HK$27,431 HKD at MOH London · As of October 29, 2026
View at MOH London

About this 4.21ct lab-grown heart diamond

This 4.21ct lab-grown heart sits in the three to five carat band, graded D colour (colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG778628579 or 778628579. Listed at 6 retailers as of October 29, 2026, with prices from HK$10,552 to HK$27,431, a HK$16,879 spread on the same certified stone. MOH London lists it at HK$27,431. 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

4.21
Carat
D
Colour
VVS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.7°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778628579
Dimensions9.66 × 10.91 × 6.80 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
9.66 mm10.91 mm4.21 ctD / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778628579
Side View
Table 54.0%Crown 37.7°Girdle: STK-THKPavilion 40.4°Culet: NoneDepth 62.3%

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: Oct 30
Current: HK$27,431 HKD|Low: HK$10,160 HKD|High: HK$27,630 HKD|Avg: HK$17,415 HKD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 3HK$10,552 HKD
Retailer 2HK$11,143 HKD
Retailer 4HK$11,745 HKD
Retailer 5HK$19,246 HKD
Retailer 6HK$25,174 HKD
MOH LondonHK$27,431 HKD

38 data points across 6 retailers

6 retailersHK$10,552 HKD to HK$27,431 HKD

A
Cheapest Retailer
-
HK$10,552 HKD
$1,345 USD
A
Retailer 2
-
HK$11,143 HKD
£1,118 GBP
View
A
Retailer 3
-
HK$11,745 HKD
$1,497 USD
View
B+
Retailer 4
-
HK$19,246 HKD
$2,453 USD
View
B
Retailer 5
-
HK$25,174 HKD
$3,209 USD
View
Most Expensive
B
MOH London
LG778628579 · Oct 29
HK$27,431 HKD
£2,753 GBP
View
5 more retailers have this diamond
Prices start from HK$10,552 HKDSave up to HK$16,879 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
4.21ct Heart
HK$10,552 HKD