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Round|Lab Grown|IGI

3.18ct J VS2 Round Lab Grown Diamond

ID • J/VS2 • IGI LG508123946

Shape and cutting style on the report: Round brilliant

Certificate IGI LG508123946

Diamond specifications and retailer prices

From $727 USD
As of October 29, 2026
Save $2,589 USD (78%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,316 USD 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 LG508123946 or 508123946. Listed at 15 retailers as of October 26, 2026, with prices from $727 to $3,316, a $2,589 spread on the same certified stone. MOH London lists it at $3,316. 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
Color
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508123946
Dimensions9.41 × 9.38 × 5.85 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
9.41 mm9.38 mm3.18 ctJ / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508123946
Side View
Table 58.0%Crown 35.3°Girdle: MED-STKPavilion 41°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: Oct 29
Current: $3,316 USD|Low: $727 USD|High: $3,355 USD|Avg: $1,741 USD|-0.9%
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 28, 2026
Retailer 8$727 USD
Retailer 11$813 USD
Retailer 3$973 USD
Retailer 2$1,020 USD
Retailer 10$1,149 USD
Retailer 7$1,366 USD
Retailer 12$1,553 USD
Retailer 4$1,578 USD
Retailer 5$1,693 USD
Retailer 6$2,077 USD
Retailer 9$2,740 USD
Retailer 13$2,906 USD
MOH London$3,316 USD

19 data points across 13 retailers

15 retailers$727 USD to $3,316 USD

A
Cheapest Retailer
-
$727 USD
A
Retailer 2
-
$791 USD
View
A
Retailer 3
-
$813 USD
View
Final sale: no returns
A
Retailer 4
-
$843 USD
View
Retailer 5
-
$843 USD
View
Price last confirmed 13 days ago
A
Retailer 6
-
$973 USD
HK$7,600 HKD
View
A
Retailer 7
-
$1,020 USD
View
B+
Retailer 8
-
$1,149 USD
View
B+
Retailer 9
-
$1,366 USD
View
B
Retailer 10
-
$1,553 USD
View
B
Retailer 11
-
$2,077 USD
View
B
Retailer 12
-
$2,371 USD
View
B
Retailer 13
-
$2,740 USD
View
B
Retailer 14
-
$2,906 USD
View
Most Expensive
B
MOH London
LG508123946 · Oct 26
$3,316 USD
£2,611 GBP
View
14 more retailers have this diamond
Prices start from $727 USDSave up to $2,589 USD

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
$727 USD