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Radiant|Lab Grown|IGI

4.20ct H VS2 Radiant Lab Grown Diamond

ID • H/VS2 • IGI LG783605852

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG783605852

Diamond specifications and retailer prices

From $949 NZD
$535 USD
As of October 30, 2026
Save $7,869 NZD (89%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,818 NZD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 4.2ct lab-grown radiant diamond

This 4.2ct lab-grown radiant sits in the three to five carat band, graded H colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG783605852 or 783605852. Listed at 15 retailers as of October 28, 2026, with prices from $949 to $8,818, a $7,869 spread on the same certified stone. Brilliant Earth lists it at $8,818. 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

4.20
Carat
H
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.9°
Pavilion angle32.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783605852
Dimensions10.43 × 8.52 × 5.22 mm
L/W Ratio1.22
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.43 mm8.52 mm4.20 ctH / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783605852
Side View
Table 74.0%Crown 39.9°Girdle: Slightly ThickPavilion 32.7°Culet: NoneDepth 61.3%

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 30
Current: $8,818 NZD|Low: $758 NZD|High: $9,102 NZD|Avg: $3,087 NZD|-3.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 28, 2026
Retailer 11$1,063 NZD
Retailer 7$1,178 NZD
Retailer 2$1,419 NZD
Retailer 9$1,820 NZD
Retailer 10$1,888 NZD
Retailer 3$2,252 NZD
Retailer 6$3,039 NZD
Retailer 8$3,096 NZD
Retailer 12$3,434 NZD
Retailer 4$3,824 NZD
Retailer 5$4,942 NZD
Brilliant Earth$8,818 NZD

19 data points across 12 retailers

15 retailers$949 NZD to $8,818 NZD

A
Cheapest Retailer
-
$949 NZD
$535 USD
A
Retailer 2
-
$1,063 NZD
$599 USD
View
Final sale: no returns
A
Retailer 3
-
$1,063 NZD
$599 USD
View
A
Retailer 4
-
$1,178 NZD
$664 USD
View
Retailer 5
-
$1,178 NZD
$664 USD
View
Price last confirmed 14 days ago
A
Retailer 6
-
$1,419 NZD
$800 USD
View
B+
Retailer 7
-
$1,820 NZD
$1,026 USD
View
A
Retailer 8
-
$1,888 NZD
$1,064 USD
View
A
Retailer 9
-
$2,252 NZD
$1,269 USD
View
B+
Retailer 10
-
$3,039 NZD
$1,713 USD
View
B+
Retailer 11
-
$3,096 NZD
$1,745 USD
View
B+
Retailer 12
-
$3,434 NZD
£1,524 GBP
View
B+
Retailer 13
-
$3,824 NZD
$2,155 USD
View
B
Retailer 14
-
$4,942 NZD
£2,193 GBP
View
Most Expensive
B
Brilliant Earth
18144898A · Oct 28
$8,818 NZD
$4,970 USD
View
14 more retailers have this diamond
Prices start from $949 NZDSave up to $7,869 NZD

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
4.20ct Radiant
$949 NZD