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Oval|Lab Grown|IGI

3.51ct D VS2 Oval Lab Grown Diamond

EX • D/VS2 • IGI LG657420398

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG657420398

Diamond specifications and retailer prices

From $1,664 NZD
$938 USD
As of October 29, 2026
Save $3,737 NZD (69%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $5,401 NZD at Brilliance · As of October 29, 2026
View at Brilliance

About this 3.51ct lab-grown oval diamond

This 3.51ct lab-grown oval sits in the three to five carat band, graded D colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG657420398 or 657420398. Listed at 21 retailers as of October 29, 2026, with prices from $1,664 to $5,401, a $3,737 spread on the same certified stone. Brilliance lists it at $5,401. 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

3.51
Carat
D
Colour
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG657420398
Dimensions12.26 × 8.43 × 5.32 mm
L/W Ratio1.45
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.26 mm8.43 mm3.51 ctD / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG657420398
Side View
Table 59.0%Crown 35.9°Girdle: MED-THKPavilion 40.3°Culet: NoneDepth 63.1%

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 29
Current: $5,401 NZD|Low: $1,189 NZD|High: $7,793 NZD|Avg: $3,520 NZD|-30.7%
Brilliance
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 3$1,189 NZD
Retailer 7$1,664 NZD
Retailer 11$1,913 NZD
Retailer 5$2,420 NZD
Retailer 12$2,559 NZD
Retailer 8$2,779 NZD
Retailer 6$2,865 NZD
Retailer 4$3,966 NZD
Retailer 10$4,255 NZD
Retailer 2$5,241 NZD
Retailer 9$5,273 NZD
Brilliance$5,401 NZD

19 data points across 12 retailers

21 retailers$1,664 NZD to $5,401 NZD

Retailer 1
-
$1,648 NZD
$929 USD
Price last confirmed 15 days ago
Retailer 2
-
$1,648 NZD
$929 USD
View
Price last confirmed 9 days ago
A
Retailer 3
-
$1,664 NZD
$938 USD
View
Final sale: no returns
A
Retailer 4
-
$1,794 NZD
$1,011 USD
View
A
Retailer 5
-
$1,794 NZD
$1,011 USD
View
Retailer 6
-
$1,913 NZD
$1,078 USD
View
Price last confirmed 20 days ago
Retailer 7
-
$1,913 NZD
$1,078 USD
View
Price last confirmed 19 days ago
Retailer 8
-
$1,913 NZD
$1,078 USD
View
Price last confirmed 18 days ago
Retailer 9
-
$1,913 NZD
$1,078 USD
View
Price last confirmed 18 days ago
A
Retailer 10
-
$2,420 NZD
£1,074 GBP
View
B+
Retailer 11
-
$2,559 NZD
$1,442 USD
View
B+
Retailer 12
-
$2,779 NZD
$1,566 USD
View
B+
Retailer 13
-
$2,865 NZD
$1,615 USD
View
B
Retailer 14
-
$4,255 NZD
$2,398 USD
View
B
Retailer 15
-
$4,853 NZD
$2,735 USD
View
B
Retailer 16
-
$5,241 NZD
$2,954 USD
View
B
Retailer 17
-
$5,273 NZD
£2,340 GBP
View
Retailer 18
-
$5,376 NZD
$3,030 USD
View
Price last confirmed 20 days ago
Retailer 19
-
$5,376 NZD
$3,030 USD
View
Price last confirmed 15 days ago
Retailer 20
-
$5,376 NZD
$3,030 USD
View
Price last confirmed 18 days ago
Most Expensive
B
Brilliance
D46514018 · Oct 29
$5,401 NZD
$3,044 USD
View
20 more retailers have this diamond
Prices start from $1,664 NZDSave up to $3,737 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
3.51ct Oval
$1,664 NZD