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Round|Lab Grown|IGI

3.18ct J VS2 Round Lab Grown Diamond

ID • J/VS2 • IGI LG508124138

Shape and cutting style on the report: Round brilliant

Certificate IGI LG508124138

Diamond specifications and retailer prices

From $1,293 NZD
As of November 5, 2026
Save $3,876 NZD (75%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $5,899 NZD at MOH London · As of October 26, 2026
View at MOH London

About this 3.18ct lab-grown round diamond

This 3.18ct lab-grown round sits in the three to five carat band, graded J colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG508124138 or 508124138. Listed at 15 retailers as of November 4, 2026, with a 300% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

3.18
Carat
J
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508124138
Dimensions9.43 × 9.39 × 5.80 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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
9.43 mm9.39 mm3.18 ctJ / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508124138
Side View
Table 58.5%Crown 35.1°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.6%

Caratlytics Score

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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: Nov 5
Current: $5,899 NZD|Low: $1,293 NZD|High: $5,969 NZD|Avg: $3,112 NZD|+0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 9$1,293 NZD
Retailer 11$1,446 NZD
Retailer 3$1,729 NZD
Retailer 6$1,814 NZD
Retailer 10$2,044 NZD
Retailer 8$2,430 NZD
Retailer 12$2,763 NZD
Retailer 4$2,807 NZD
Retailer 5$3,012 NZD
Retailer 2$3,024 NZD
Retailer 7$3,695 NZD
Retailer 13$5,169 NZD
MOH London$5,899 NZD

18 data points across 13 retailers

15 retailers$1,293 NZD to $5,169 NZD

A
Cheapest Retailer
-
$1,293 NZD
A
Retailer 2
-
$1,407 NZD
View
A
Retailer 3
-
$1,446 NZD
View
Final sale: no returns
A
Retailer 4
-
$1,500 NZD
View
Retailer 5
-
$1,500 NZD
View
Price last confirmed 20 days ago
A
Retailer 6
-
$1,729 NZD
View
A
Retailer 7
-
$1,814 NZD
View
B+
Retailer 8
-
$2,044 NZD
View
B+
Retailer 9
-
$2,430 NZD
View
B
Retailer 10
-
$2,763 NZD
View
B+
Retailer 11
-
$3,024 NZD
View
B
Retailer 12
-
$3,695 NZD
View
B
Retailer 13
-
$4,218 NZD
View
B
Retailer 14
-
$5,169 NZD
View
Most Expensive
MOH London
LG508124138 · Oct 26
$5,899 NZD
£2,611 GBP
View
Price last confirmed 10 days ago
14 more retailers have this diamond
Prices start from $1,293 NZDSave up to $3,876 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
3.18ct Round
$1,293 NZD