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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 $1,915 AUD
$1,345 USD
As of November 1, 2026
Save $3,035 AUD (61%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $4,950 AUD at MOH London · As of November 1, 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 November 1, 2026, with prices from $1,915 to $4,950, a $3,035 spread on the same certified stone. MOH London lists it at $4,950. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $4,950 AUD|Low: $1,844 AUD|High: $5,014 AUD|Avg: $3,168 AUD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 3$1,915 AUD
Retailer 2$2,026 AUD
Retailer 4$2,131 AUD
Retailer 5$3,492 AUD
Retailer 6$4,568 AUD
MOH London$4,950 AUD

38 data points across 6 retailers

6 retailers$1,915 AUD to $4,950 AUD

A
Cheapest Retailer
-
$1,915 AUD
$1,345 USD
A
Retailer 2
-
$2,026 AUD
£1,121 GBP
View
A
Retailer 3
-
$2,131 AUD
$1,497 USD
View
B+
Retailer 4
-
$3,492 AUD
$2,453 USD
View
B
Retailer 5
-
$4,568 AUD
$3,209 USD
View
Most Expensive
B
MOH London
LG778628579 · Nov 1
$4,950 AUD
£2,738 GBP
View
5 more retailers have this diamond
Prices start from $1,915 AUDSave up to $3,035 AUD

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
$1,915 AUD